# Maths

Can you help me?
I have this question:
Find the equation of the line given the following information:
m=UD, x=3.
And I have to find the equation.

Then it says:
Identify the slope and y intercept from the following equations:
x=5, m=___, b=___
I also have to graph it.

But I don't understand how to do this if the slope is UD!
Help me!

1. 👍 0
2. 👎 0
3. 👁 86
1. equation is

y = (UD)x + b

1. 👍 0
2. 👎 0
posted by Reiny
2. UD is undefined...

1. 👍 0
2. 👎 0
posted by Paws
3. Ok, then ....

If the slope is undefined, you have a vertical line.
All vertical lines can be defined only by their x value.
since x = 3
the equation of your line is x = 3

Furthermore, if the slope is undefined, that is, if the line is vertical it CANNOT be written in the form
y = mx + b
A vertical line cannot have a y-intercept, unless it is the y-axis itself, namely x = 0

if x = 5, that becomes your equation of that vertical line.
To graph it, use (5,0) on the x-axis, then draw a vertical line.

1. 👍 0
2. 👎 0
posted by Reiny
4. Oh Thanks so much for your help!
But can I just ask, do the two equation have anything to do with each other? And don't I have to times both sides by 5/3 to make it equal?

1. 👍 0
2. 👎 0
posted by Paws

## Similar Questions

1. ### Math

I have a series of questions that I did. They lead up to the last question I can't solve. Could you check my math and help me with the last question? Thanks! a) Let a be the point (2,3). Compute the distance from Origin 0 to A

asked by Shane on October 14, 2010
2. ### Calculus

I asked for help on a question yesterday and I got really good help and I was wondering if someone could help with this problem too. This is the question: Find an equation of the line through the point (1,3) that cuts off the

asked by Kristal on November 12, 2006
3. ### Math (Calculus) (mean value theorem emergency)

Consider the graph of the function f(x)=x^2-x-12 a) Find the equation of the secant line joining the points (-2,-6) and (4,0). I got the equation of the secant line to be y=x-4 b) Use the Mean Value Theorem to determine a point c

asked by Ray on November 19, 2016
4. ### Geometry HELP!!!

What happens to the graph of the line y = 3x -2 when the equation is changed to y = 3x +6? What happens to the graph of the line y = 2x - 5 when the equation is changed to y = 5x + 6? On the first question: What happens to the

asked by Margie on October 10, 2006
5. ### math2

I was solving a problem. In It r have been given that two lines are perpendicular to each other The equation of one line 2x-3y+4=0 Now i have to find the equation of another line We can find it by finding the slope of the

asked by A GOODSTUDENT on September 14, 2016
6. ### math

I need help with this question. Write the equation of the line which contains the point)0, -3) and whose slope is 4. A general line equation can be written as y = mx + c, where m is the slope and c a constant. so we can write this

asked by Taylour on April 18, 2007
7. ### Analytic Geometry

A line Q has an equation of x+5x+5=0. Find the equation of the line that is "perpendicular" to Q and passes through (3,1). Find the question of the line that is "parallel" to Q and passes to through (3,1). Find the equation of the

asked by Kimbaza on November 18, 2015
8. ### Algebra

Question 1 Solve using the multiplication principle then graph. -15>-75 Question 2 Translate to an equality. Use the variable x. The number of people in the chess clubi less than or equal to 15. Question 3 Solve using the addition

asked by Queen D on March 6, 2010
9. ### Math 10

1 more question.... how would I make this equation perpendicular? The question is.... The line Y=3x-1 and a line perpendicular to it intersect at R(1,2). Determine the equation of the perpendicular line. Can someone please tell me

asked by Karn on December 10, 2006
10. ### calculus

find an equation for the line with the given properties. express the equation in slope-intercept form. containing the pointsP=(-1,1)& Q= (1,-2) What is the equation of the line? y= Find the the equation of a line that is

asked by spazed out on December 4, 2012
11. ### equations of tangents and normals

hi, i'd really appreciate some help solving this question! I am completely at loss here :/ The question is to: Find the equation of the normal to y=loge(x+2) which is parallel to the line with equation y+3x-5=0 I am fine at

asked by elle on May 20, 2007

More Similar Questions