Thursday

April 17, 2014

April 17, 2014

Number of results: 233,839

**Discrete Math: Equations of a Line**

Find parametric equations for the line that passes through the point (0, -1, 1) and the midpoint of the line segment from (2, 3, -2) to (4, -1, 5). I don't know how to solve this problem.
*Friday, March 14, 2008 at 11:56am by Anonymous*

**Discrete Math: Equations of a Line**

let M be the midpoint then M =(3,1,3/2) then a direction vector of the line is [3-0,1+1,3/2-1] = [3,2,1/2] or [6,4,1} possible parametric equations: x = 0 + 6t y = -1 + 4t z = 1 + t
*Friday, March 14, 2008 at 11:56am by Reiny*

**Discrete Math: Equations of Line in a Plane**

I will do the second one, since it looks a bit more difficult than the first You are clearly working in only 2-D here. I assume you know that for any straight line Ax + By + C = 0 [A,B] is a normal to the line which makes [B,-A] a direction vector and the slope of the line is...
*Wednesday, March 12, 2008 at 11:09am by Reiny*

**Math**

In your own line of work, give one example of a discrete and one example of a continuous random variable, and describe why each is continuous or discrete.
*Tuesday, October 11, 2011 at 6:00pm by Jen*

**discrete math**

how do i solve linear equations? -4(k-2)+3(k+1) =7.
*Thursday, September 11, 2008 at 6:30pm by kennedy*

**Discrete Math: Equations of Line in a Plane**

I'm stuck on these questions. Can you please show me a step by step solution? 20) For each of the following, find a normal vector, a direction vector, and a point of each line. Note, normal vector means perpendicular to the direction vector. a) 3x - 6y = 14 TEXTBOOK ANSWER: ...
*Wednesday, March 12, 2008 at 11:09am by Anonymous*

**Discrete Math **

Ok thank you for your helpful response! I have a couple of questions though. . . Is the 15th line suppose to be '(k+1)(k+2)/(22k+3)'? Also, the 16th line = RS, which is what exactly?
*Tuesday, March 22, 2011 at 3:58pm by Francesca *

**math**

Hi, How could I find the line of best fit? I plotted each of the equations I had for a problem I'm solving. The equations were linear (y=ax+b) and quadratic (y=ax+b+c). I'm supposed to find out which line is the most appropriate for the data that is given to me. When looking ...
*Monday, March 17, 2008 at 4:40pm by Irene*

**math**

how do you draw a oblique discrete line
*Sunday, October 26, 2008 at 11:30am by Tatiana*

**Math 116 **

Each of these equations is a straight line. x=2 is a vertical line, y=-3 is a horizontal line.
*Thursday, September 22, 2011 at 2:05pm by Steve*

**Discrete Mathematics**

3.Does it matter if we join two vertices with a straight line or a curved line when we represent a graph by drawing it on paper?
*Thursday, August 8, 2013 at 3:34pm by Joy*

**Elementary Math**

The temperature of a cup of coffee is a discrete or continuous random variable? Am I correct " Discrete"
*Saturday, August 8, 2009 at 8:19pm by J.J.*

**MATH**

(A) Classify the following as an example of nominal, ordinal, interval, or ratio level of measurement, and state why it represents this level: zip codes for the state of Pennsylvania (B) Determine if this data is qualitative or quantitative: Nationality (C) In your own line of...
*Friday, November 11, 2011 at 1:17pm by Jennifer*

**MATH**

Determine whether the situation calls for a discrete or continuous random variable. The braking time of a car Is it discrete?
*Tuesday, September 8, 2009 at 6:00pm by Jalynn*

**Math**

Find parametric equations and symmetric equations for the line of intersection of the given planes. x + y + z = 2, x + z = 0 X=1 y = Z= x=, y=
*Tuesday, April 13, 2010 at 1:58am by Mike*

**research and evaluation**

Give examples of both discrete and continuous data? What makes them different? Is the measurement of money continuous or discrete? Explain. Can discrete data be analyzed using the normal distribution? Why or why not?
*Thursday, November 18, 2010 at 11:52pm by sue*

**Maths**

I assume you are talking about linear (straight line) equations that can be written in the form y = mx + b m is the slope or gradient. You don't plot it, but you can use it to plot each line on a graph. Start at the y-intercept (b) and draw a line with slope m. The largest ...
*Saturday, May 3, 2008 at 5:58am by drwls*

**Discrete Math**

Sorry for the double post. Skip the first one, which contains a typo on the fourth line.
*Saturday, February 19, 2011 at 9:34am by MathMate*

**Stats**

Determine the following random variables discrete or continuous: a)Number of fish I caught during 2 hours? I said: discrete b)Temperature of a coffee cup? I said: continuous c)Height of a 2-year-old maple tree? I said: continuous d) Number of credit cards I have in my wallet? ...
*Saturday, February 8, 2014 at 4:24pm by Ashley*

**math**

the line with slope of -3 through (2,-5) is y+5 = -3(x-2) Learn the various forms of equations for a line; it will come in handy many times in the future.
*Sunday, January 19, 2014 at 11:13am by Steve@Math*

**math**

Solve each system of linear equations by both graphical and algebraic line 1 x+2y=4 line 2 x-y=0
*Sunday, August 21, 2011 at 5:01pm by Abel*

**Maath**

This is one line in 3-D, you are not dealing with "lines". In a set of parametric equations, which describe one line, each equation tells you about the behaviour of each of the variables, so the first one tells you about the x, the second about the y, etc from your equations I...
*Wednesday, March 19, 2008 at 11:17pm by Reiny*

**Math**

How do I write the Symmetric Equation of a line given the following parametric equations: (where t is a scalar) x=0t y=0t z=1+1t I know normally I would solve each equation for t and set the equations equal to one another. However, I can not solve for t in the first two ...
*Wednesday, November 3, 2010 at 10:36pm by Dwight*

**Math**

How do I write the Symmetric Equation of a line given the following parametric equations: (where t is a scalar) x=0t y=0t z=1+1t I know normally I would solve each equation for t and set the equations equal to one another. However, I can not solve for t in the first two ...
*Thursday, November 4, 2010 at 11:34am by Dwight*

**Math**

Put both equations in the form of a straight line which is y = mx + b and determine m for each line. If m is the same, the lines are parallel.
*Saturday, August 2, 2008 at 2:19pm by DrBob222*

**Discrete Mathematics-Elementary graph theory**

No it does not matter. You can even use a wavy line. However, we usually use a straight line unless we would like to avoid certain crossing of lines.
*Thursday, August 8, 2013 at 3:34pm by MathMate*

**Pre- Algebra**

Given an equation of a line, how do I find equations for lines parallel to it going through specified points Simplifying the equations into slope-intercept form. 1. y= -2x -4; (1, 3) how do I write the equation of a line parallel to the given line but passing through the given...
*Wednesday, August 14, 2013 at 1:29pm by Roosevelt*

**Stats**

Classify the following as discrete or continuous random variables. (A) The time it takes to run a marathon (B) The number of fractions between 1 and 2 (C) A pair of dice is rolled, and the sum to appear on the dice is recorded (D) The length of a broad jump I got: (A) ...
*Monday, October 24, 2011 at 3:41pm by Jennifer*

**Geometry**

1.) A skateboard ramp has a 158° entry angle. Find the measure of ∠1. 2.) Which of the following equations is parallel to the line passing through A(-2, 7);B(-2, -2)? 3.) Which of the following equations would graph a line parallel to 3y = 2x - x + 5? *Please help me!
*Tuesday, October 29, 2013 at 12:38pm by Kaitlyn*

**Math: Linear Equations**

However, if the equation was this instead ... 2y + 16x = 0 ... then you do have a diagonal line that has both an x-intercept and a y-intercept and a slope that is not zero but not undefined. I think it is a negative slope. Can you figure out the x-intercept of the line? the y-...
*Thursday, December 15, 2011 at 10:25pm by Willie*

**algebra**

how would i find an equation of a line that goes through points(1,6) and (3,10)?? thanks A straight line is y=mx+b Substitute the points to make two equations. 6=m(1)+b 10=m(3)+b Two equations; two unknowns, m and b. Solve for m and b, then plug back into y = mx + b. That will...
*Friday, December 22, 2006 at 9:49pm by jasmine*

**Is this right?? Stats....**

Classify the following as discrete or continuous random variables. (A) The time it takes to run a marathon (B) The number of fractions between 1 and 2 (C) A pair of dice is rolled, and the sum to appear on the dice is recorded (D) The length of a broad jump I got: (A) ...
*Tuesday, October 25, 2011 at 9:28am by Jennifer*

**Algebra**

Discuss the steps necessary to carry out each activity. Describe briefly what each line looks like in relation to the original given line. Answer these two questions briefly in your own words: What does it mean for one line to be parallel to another? What does it mean for one...
*Thursday, February 20, 2014 at 11:53pm by Patrice Mason*

**math**

1. A skateboard ramp has a 158º entry angle. Find the measure of ∠1. A.) 22º B.) 68º C.) 78º D.) 58º 2. Which of the following equations parallel to the line passing through A(-2, 7);B(-2, -2)? A.) y = -2 B.) y = x C.) 3x = 5 D.) -2x = 7y 3. Which of the following ...
*Wednesday, October 30, 2013 at 3:02pm by kaitlyn*

**math/equations**

Hi. I am having some issues with this one. Give the equation of the line that is perpendicular to the line y=x+6 and passes through point (0,-4). Thank you so very much!!!
*Thursday, July 29, 2010 at 8:27pm by amy*

**Linear equations**

The first equation can be rewritten as: y=-3x-2 so the slope of the first line is m=-3 The slope of a line perpendicular to it is m'=1/(-3)=-1/3 The second equation can be rewritten as: -4x-3y=6 y=(-4/3)x -2 so the y-intercept is -2. From the above steps, there should be ...
*Saturday, October 8, 2011 at 9:28pm by MathMate*

**Math**

x=k where k is a constant is NOT a linear equation. Linear equations consist of a variable. A constant CANNOT be a variable therefore x=k is NOT a linear equation. Neither is y=k. Linear equations have a slope, if it doesn't then it's not a linear equation.*** All linear ...
*Tuesday, June 8, 2010 at 6:13pm by Ariel*

**math**

In triangle ABC, angle C is congruent to angle A, line BC=2x-5, line AB=x+5 and line AC=x+10. Find x. The problem didn't have a triangle drawn so i drew it myself. I tried many equations but when i substitute it it didn't work.
*Sunday, November 16, 2008 at 8:39pm by mark*

**pre-calculus**

Given: K(0,0), L(18,0), M(6,12) To find: Equations of sides of triangle KLM. Equations of altitudes of the triangle, namely KK1, LL1, MM1, where K1, L1 and M1 are the intersection of the altitudes of the points K,L,M and the opposite side. Prove that the three altitudes meet ...
*Tuesday, August 18, 2009 at 8:15pm by MathMate*

**math**

Determine whether the situation calls for a discrete or continuous random variable. The number of freshmen in the required course, English 101 The braking time of a car I think the first one discrete and the second is continous is this correct?
*Sunday, April 25, 2010 at 1:26pm by KiKi*

**Math**

What does it mean if a line in R^3 is parallel to the xy-plane but not to any of the axes. I really don't know what this means in terms of how the parametric and symmetric equations of the line should look. Please help.
*Wednesday, October 27, 2010 at 11:11pm by Kate*

**Math**

What does it mean if a line in R^3 is parallel to the xy-plane but not to any of the axes. I really don't know what this means in terms of how the parametric and symmetric equations of the line should look. Please help.
*Tuesday, November 2, 2010 at 2:27pm by Kate*

**Math**

Method: Find the equation of two of those altitudes. Solve the two equations to find their intersection point. How? Make a rough sketch Pick any point and find the slope of the opposite side. The slope of the altitude to that side is the negative reciprocal of the slope of ...
*Friday, December 7, 2012 at 4:11pm by Bobby Fett*

**Discrete Math**

There are 150 students taking Discrete Mathematics II, Calculus II, and Physics I courses. Of these 51 are taking Discrete Mathematics II, 111 are taking Calculus II, and 63 are taking Physics I. There are 41 taking Discrete Mathematics II and Calculus II, 32 students taking ...
*Sunday, April 6, 2014 at 11:29pm by Anonymous*

**math-please help!**

Determine whether the situation calls for a discrete or continuous random variable. The number of freshmen in the required course, English 101 The braking time of a car I think the first one discrete and the second is continous is this correct?
*Sunday, April 25, 2010 at 8:55pm by KiKi*

**Math**

The number of people waiting in a line for a movie hours (x) people (y) 1 170 2 230 3 290 4 350 Is this discrete or continuous data?
*Wednesday, February 16, 2011 at 11:45am by Sally*

**Math - equations of lines**

Writing the parametric equations of the given line one x=-21-12t and since we want the x intercept the y=z=0 therefore 8+4t=0 and 14+7t=0 in both case the t value is '-2' repeating the similar procedure to find the y-intercept the value of s=-3 there after how do i find my ...
*Sunday, September 5, 2010 at 11:26pm by Shaila*

**statistics, are my calculations correct?**

classify the following as discrete or continuous random variables: a) the time it takes to run a marathon- i think that it is discrete b) the number of fractions between one and two- i think that it is discrete? c) a pair of dice is rolled and the sum to appear on the dice is ...
*Saturday, October 23, 2010 at 6:51pm by mary- please check calculations.*

**small typo - Discrete Math **

6th line should have been 1/(1(3)) + 4/(3(5)) + .... + k^2/((2k-1)(2k+1)) = k(k+1)/(2(2k+1))
*Tuesday, March 22, 2011 at 3:58pm by Reiny*

**Math**

Rewrite the equations in y = mx + b form. The slope of the first line is -2 and the slope of the second line is +1/2 If the product of the two slopes is -1, the lines are perpendicular
*Tuesday, November 18, 2008 at 11:11am by drwls*

**Math**

What will the graph look like for a system of equations that has no solution? A. The lines will be perpendicular. B. The lines will cross at one point. C. Both equations will form the same line. D. The lines will be parallel. I think it is D..?
*Tuesday, April 9, 2013 at 2:28pm by Cassie*

**Math**

Equations of a straight line : y = m x + b Where : m = slope b = the y intercept ( where the line crosses the y axis ) Parallel lines have the same slope. In this case m = 1 / 3 y = ( 1 / 3 ) x + b x = - 9 y = 5 5 = ( 1 / 3 ) ( - 9 ) + b 5 = - 3 + b Add 3 to both sides 5 + 3...
*Friday, May 25, 2012 at 6:52pm by Bosnian*

**Math - equations of lines**

As I understand it, the x-intercept of a line in 3D would be where y=0 and z=0 that is, [x,0,0] = [-21,8,14] + t[-12,4,7] this results in 2 different values of t, thus the line misses the x-axis. The same would be true for the y-intercept of the 2nd line, it would miss the y-...
*Sunday, September 5, 2010 at 11:26pm by Reiny*

**math 20 system of equations**

Hint: Do you know how to find the equation of a straight line L1 passing through a given point (x0,y0)=(3,5) with a given slope m1 = 1.0 ? Can you do the same for a line L2 with a slope m2=0.5? Now solve the system of equations L1 and L2 and see what you get. Try other values ...
*Tuesday, October 12, 2010 at 10:43pm by MathMate*

**Physics**

Explain atomic line spectra in terms of transitions between discrete energy levels.
*Wednesday, February 9, 2011 at 6:08am by Hakuoh*

**Math **

Normal distributions model (some) continuous random variables. Strictly, a Normal random variable should be capable of assuming any value on the real line, though this requirement is often waived in practice. For example, height at a given age for a given gender in a given ...
*Thursday, January 14, 2010 at 6:58pm by Damon*

**Math **

That is pretty much the idea, but really discrete means only certain values. For example if half values were allowed but not others like 1/4 and 3/4 it would still be discrete, a finite number of values allowed.
*Thursday, January 14, 2010 at 6:58pm by Damon*

**Math**

For each of the following, find the parametric equations of the line that passes through the point P with direction vector d. In each case, find two points on the line different from P. a) P(1,1) d=(4,-4) b) P(5,0) d=(1,3) answer at the back of the book is: a) x=1+t y=1-t ; (2...
*Monday, March 23, 2009 at 9:05pm by Steffy*

**maths..plse helppppppp**

Please help me to find the separate equations of the line represented by following equations: a) x^2+2(cosec a)xy-y^2=0 b) x^2+2xy. tan a-y^2=0
*Friday, December 7, 2012 at 3:03am by ragini*

**geography**

SOME RAILWAYS OF SOUTH KOREA: Gaya Line Bukjeonju Line Yeocheon Line Gyeongbu Line Gyeongbu Line (KTX) Gyeongui Line Seoul Gyowoi Line Gyeongin Line Gyeongwon Line Gyeongchun Line Janghang Line Chungbuk Line Honam Line Honam Line (KTX) Jeolla Line
*Wednesday, March 26, 2008 at 1:09pm by harry*

**Math**

the question i need help with is: Classify the random variable as finite discrete, infinite discrete or continuous. The random variable given is the number of hours a child watches television on a given day.
*Wednesday, June 8, 2011 at 11:41pm by Winnie*

**Discrete Math **

Hmmm...I kind of get what you are saying, but why is 18 not a set that does not include 2? Here is an example in the book that is true: _ 55 ∈ 7 (mod 3) _ 7 (the line goes over 7 in the above) Why would this be considered true?
*Monday, March 14, 2011 at 3:17pm by Francesca *

**Math**

Do you mean dependent of independent equations? It depends upon how many equations and variables there are. If any of the equations are dependent on (derivable from) others, and there are at least as many variables as equations, then the system of equations in underdetermined ...
*Tuesday, June 3, 2008 at 4:00pm by drwls*

**calculas**

Find the equations for the tangent line and normal line to the curve for f(x)=(x^4)+(2e^x) at the point (0,2)?
*Tuesday, September 28, 2010 at 12:16am by john*

**equations**

does it make a diffrence what two points you chooose on a stragight line to find the slope of the line
*Wednesday, September 3, 2008 at 5:42pm by isaiah*

**calculus**

Find equations of the tangent line and normal line to the curve at the given point. y = x^4 + 2e^x, (0,2)
*Tuesday, October 14, 2008 at 7:16pm by Vishnu*

**calculus**

Find the parametric equations for the line that contains the point (3,1,-4) and is parallel to the line r(t)=(1+2t)i+(-3-t)j+(5+5t)k
*Tuesday, January 15, 2013 at 8:05pm by Zac*

**help!**

Can you please give me one of them so I cansolve for the other one?PLease! The general formula for a straight line is y = mx + b. Just plug the points into the equation to arrive at two equations. 6=2m+b 10=4m+b you have two equations and two unknowns. Solve them ...
*Wednesday, November 1, 2006 at 5:21pm by margie*

**Math**

The two equations are easy to solve, just add up the two equations and the y term will drop out to get 11x = 2 x = 2/11 sub back into the second (or the first) to get 7(2/11) + 6y = 7 times 11 14 + 66y = 77 66y = 63 y = 63/66 = 21/22 slope of first line = -7/k slope of 2nd ...
*Friday, January 28, 2011 at 4:09pm by Reiny*

**Adv. Math.**

Write a vector equation of the line that passes through point P and is parallel to a. Then write parametric equations of the line. P(-1, 3); a=(-6, -1) MY ANSWER: (x+1, y-3) = t(-6, -1); x= -1-6t, y=3-t P(0, 5); a=(2, -9) MY ANSWER: (x, y-5) = t(2, -9); x=2t, y=5-9t
*Wednesday, June 17, 2009 at 8:09pm by James*

**Math**

Give the equation of a line perpendicular to the line y = -8x + 8 having the y-intercept 2 units below the y-intercept of the given equation. At what point the two equations cross each other?
*Saturday, January 9, 2010 at 11:26am by Anna*

**math**

Give the equation of a line perpendicular to the line y = -8x + 8 having the y-intercept 2 units below the y-intercept of the given equation. At what point the two equations cross each other?
*Sunday, February 28, 2010 at 4:53pm by Jillian*

**Transcription ambiguity**

In books where equations are typeset, the square-root sign includes a horizontal bar to indicate the extent of the square-root. When the equation is transcribed to a single line, the horizontal line should be replaced with parentheses. For example: √2cos(x)-1 should be ...
*Friday, March 5, 2010 at 3:46am by MathMate*

**Math: Linear Equations**

I think these are trick questions and you have the right idea. 3x = 9 is the equation of a vertical line. There is no y in the equation, so there is no "y = mx + b" form for a vertical line. The simplest way to express this line is x = 3. Its x-intercept is 3 (because (3, 0) ...
*Thursday, December 15, 2011 at 10:25pm by Willie*

**Calculus grade 12**

1. a) Write the vector and parametric equations of the line through the points A(6, -1, 5) and B(-2, -3, 6). b) Find another point on the line in (a).
*Thursday, May 3, 2012 at 11:03pm by J*

**Geometry PLEASE HELP ME**

Method: Find the equation of two of those altitudes. Solve the two equations to find their intersection point. How? Make a rough sketch Pick any point and find the slope of the opposite side. The slope of the altitude to that side is the negative reciprocal of the slope of ...
*Tuesday, December 11, 2012 at 2:11pm by Bobby Fett*

**What is discrete math? And is it relatively easy?**

Thank you for using the Jiskha Homwork Help Forum. Here are some explanations about discrete math: 1. http://en.wikipedia.org/wiki/Discrete_mathematics 2. http://www.elsevier.com/wps/find/journaldescription.cws_home/505610/description#description 3. http://math.about.com/od/...
*Tuesday, December 18, 2007 at 11:17pm by SraJMcGin*

**linear equations**

Write the equation of a line in slope-intercept form that is perpendicular to the line and passes through the point (-9, 4).
*Wednesday, December 14, 2011 at 12:12pm by nick*

**Maths**

Consider the line defined by the parametric equations x=3d-10, y=2d+1. The y-intercept of this line can be expressed as a/b. Find a and b.
*Sunday, October 27, 2013 at 1:31pm by CHRIS*

**Parametric equations/Trigonometry - Lattice points**

Thanks, but why is it a triangle and not a line I graphed it and it is a line do I have to connect the ends and stuff?
*Tuesday, December 10, 2013 at 9:40am by Sam*

**discrete data**

Can discrete data be analyzed using a normal distribution?
*Thursday, June 2, 2011 at 4:38pm by Anonymous*

**math**

1. One equation is twice the other, but represents the same line. There are an infinite number of (x,y) combinations that satisfy it. 2. Those lines intercept at a point, for one solution. 3. Both equations cannot be true. Those are the equations of parallel lines
*Thursday, September 10, 2009 at 12:03am by drwls*

**calculus**

use the definition of the derivative to calculate f'(x), if f(x)= SQRT(2x) and find the equations of the tangent line and the normal line to the graph of f at x=2
*Saturday, November 13, 2010 at 4:51pm by Raj*

**precals**

find the equations of the lines to the line whose equations is y-17 / x -13 = -3 /2 If these lines each pass through the point (6,-5) Gracias`
*Sunday, April 25, 2010 at 10:26pm by treeema*

**math**

All real linear equations are given in the form, y=mx+b. m=slope. Sorta like how steep or flat the line is. b=y-intercept, or where the line crosses the y axis. Hope this helped. You can probably figure this out from here. If not, just post more questions. Peace.
*Sunday, May 16, 2010 at 7:16pm by anonymous*

**algebra**

1. To use the intercepts, which are (x,y) = (0,2) and (6,0), you should have drawn a line through those points. 7. (7,8) does not satisfy the first equation 9. The equations are not independent. They represent the same line when plotted. There is no unique solution; there are ...
*Friday, January 8, 2010 at 11:39pm by drwls*

**Orthocenter Question**

the orthocentre is the intersection of the altutides. Method: Find the equation of two of those altitudes. Solve the two equations to find their intersection point. How? Make a rough sketch Pick any point and find the slope of the opposite side. The slope of the altitude to ...
*Tuesday, January 3, 2012 at 12:25pm by Reiny*

**Calculus**

Find parametric equations for the line through the point (0,2,2)that is parallel to the plane x+y+z = 2 and perpendicular to the line x=1+t, y=2−t, z=2t. (Use the parameter t.) (x(t), y(t), z(t)) =
*Friday, January 31, 2014 at 3:11pm by Jale*

**Math - equations of lines**

You are correct, I made an arithmetic error trying to do it in my head. ok, so when t = -2 [x,y,z] = [3,0,0] , so the endpoint of that vector is(3,0,0,) and in the second, when s = -3 [x,y,z] = [0, 7,0] so the endpoint of that vector is (0,7,0) so the direction vector of the ...
*Sunday, September 5, 2010 at 11:26pm by Reiny*

**Algebra**

I don't see any set of equations. All I see is poorly written inequality. What is supposed to follow the first ^ ? Please write equations on one line
*Tuesday, April 26, 2011 at 9:36pm by drwls*

**Discrete Math**

There wasa typo in the equations derived from the initial conditions. You should have: The initial condition gives a₀ = 1 = C₁ + C₂, a₁ = -1 = 3C₁ - 5C₂ It then easily follows that C₁ = C₂ = 1/2
*Tuesday, April 5, 2011 at 11:16am by Count Iblis*

**Math - equations of lines**

A line has the same x-intercept as [x,y,z]=[-21,8,14]+t[-12,4,7] and the same y-intercept as [x,y,z]=[6,-8,12]+s[2,-5,4]. Write the parametric equation of the line.
*Saturday, September 4, 2010 at 4:15pm by Shaila*

**Math - equations of lines**

A line has the same x-intercept as [x,y,z]=[-21,8,14]+t[-12,4,7] and the same y-intercept as [x,y,z]=[6,-8,12]+s[2,-5,4]. Write the parametric equation of the line.
*Sunday, September 5, 2010 at 11:26pm by Shaila*

**math**

graph the line with slope 1/2 passing through the point(-5,-2) find the slope of the line 5x+5y=3 write answer in simplest from consider the line 2x-4y=4 what is the slope of a line perpendicular to this line. what jis the slope of a line parallel to this line
*Sunday, February 10, 2013 at 2:16pm by Anonymous*

**algebra**

All staight line equations are in the form y=mx+c where m is the gradient and c is the intercept (0,c). So compare your function with the general equation for a straight line and by inspection you can find m and c.
*Wednesday, September 9, 2009 at 8:45am by Dr Russ*

**Calculus**

1. a) Write the vector and parametric equations of the line through the points A(6, -1, 5) and B(-2, -3, 6). b) Find another point on the line in (a). ----- This is what I got for a) r = 6i-j+5k + t(-8i-2j+k) x = 6-8t y = -1-2t z = 5+t I need help with b)
*Friday, May 4, 2012 at 3:56pm by J*

**Math 116**

Consider the following system of equations. y=2x-2 y-2x=9 What can you conclude about the system of equations? a. The system of equations is inconsistent. b. The system of equations is dependent. c. The system of equations is independent. d. none of these.
*Friday, June 21, 2013 at 12:19am by Queta*

**Discrete Mathematics**

The augmented matrix A represents a system of three real-valued equations in three unknowns. Which of the answer choices would result from the usual first step of applying Gauss-Jordan elimination?
*Tuesday, July 30, 2013 at 4:57am by Joy*

**Vectors**

3 planes; $: x+2y-2z-6=0 %: 2x-y+z+8=0 £: 2x-y+2z+3=0 (a)(i)Find the cartesian equation for the plane @ parallel to $ and containing the point (1,1,2) (ii)Calculate the distance between $ and @ (b)(i)Find the parametric equations for the line of intersection of the planes $ ...
*Sunday, April 25, 2010 at 11:22am by Anonymous*

**vectors**

3 planes; $: x+2y-2z-6=0 %: 2x-y+z+8=0 £: 2x-y+2z+3=0 (a)(i)Find the cartesian equation for the plane @ parallel to $ and containing the point (1,1,2) (ii)Calculate the distance between $ and @ (b)(i)Find the parametric equations for the line of intersection of the planes $ ...
*Sunday, April 25, 2010 at 4:41pm by Anonymous*

Pages: **1** | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>