Math(check)

1)Find the range of the relation [(-1,4)},(2,5),(3,5)}.Then determine whether the relation is a funtion.

4,5,5 is the range
4,5 is a function

2)Find f(-1),if f(x)= x^2-6x/x+2
(-1)^2-6(-1)/-1+2
1+6/-1+2
7/1 =7

3)Find f(a),if f(t)= 2t^2-t-2.
2(a)^2-a-2
2a^2-a-2

4)Which equation is linear?
a.x=-2 (my answer)
b.y=3x^2+1
c.y=square root of x-2
d.y^2=1/2x+3

5)Write -3y = -1+5x in standard form.
-5x-3y=1

6)Find the x and y intercept of the graph of 4x-2y=8
4(0)-2y=8
0-2y=8
8/-2y= y=-4
4x-2(0)=8
4x=8
8/4x= x=2 so the answer is -4;2

7)Find the slope that passes through (2,4)and(-7,8).
8-4/-7-2= 4/-9

8)What is the slope of the line x= -2?
0

9)What is the slope of a line that is parallel to the graph of 2x-3y=6?
-2/3

10)The graph of the line through(2,3) that is perpendicular to the line with equation x= -1 also goes through which point?
(-2,3)

11)Write an equation in slope intercept form for the line that has a slope of 3 and passes through (-1,2).
y=3x+5

12)Write an equation inslope intercept form for the line that passes through (-1,-2)and (3,-7).
y= -5/4x-13/4

13)Write an equation for the line that passes through(0,5)and is parallel to the line whose equation is 4x-y=3.
y=4x+5

14)Evaluate f(3/4) if f(x)= [[1-2x]]
no clue

15)Identify the range of y=[x]-4
no clue

16)Which point satisfies the inequality y<_[-x+3]?
no clue

SORRY for all the problems at once I just thought it would be better for 1 post so please don't give me a hard time and thanks for all the help.



1. ok
2. and 3. write your solution in proper form, using brackets

e.g. for f(x)= x^2-6x/x+2
f(-1) = ((-1)^2 - 6(-1))/(-1+2)
=7/1
=7

4. ok
5. It is considered better form to have your equation start with a positive x term. You can always do that by simply changing all the signs.
so 5x + 3y = -1

6. ok
7. use brackets, and a proper statement
slope = (8-4)/(-7-2)
= - 4/9

8. NO. x=-1 is a vertical line, the slope of a vertical line is undefined. The slope of a horizontal line is 0

9. No, the slope is 2/3.
Change it into the form y=mx + b and you will see.

10. yes

11. yes

12. yes (you could have checked this by substituting the given points in your answer. They should both verify.

13. yes

14. are those absolute value signs???
If so then, f(3/4) = │1 - 2(3/4)│
=│-1/2│
= 1/2

15. y=[x]-4
The absolute value of x has its smallest value when x=0. So y ≥ -4

16. pick any point for x, eg. let x=5
then y ≤ │-2│
y ≤ 2

so pick a y value < 2, how about y=1

so the point (5,1) satisfies your inequation.

14. are those absolute value signs???
If so then, f(3/4) = „ 1 - 2(3/4)„ 
=„ -1/2„ 
= 1/2
no.they're just 2 brackets on each side. 1/2 is not a choice

on #16 I don't have that as a choice. I worked it out, so would (-2,4) work?

yes for 16, there would be an infinite number of choices.

for 15 it would then by -1/2

lol 14 is a wierd problem. My choices are 0,-2,-1,1 I think its called a special function problem

sorry i am too busy

  1. 👍 0
  2. 👎 0
  3. 👁 102
asked by erin
  1. write and equation a line through the given point in Ax+By=C
    1.- (13,-5) (13,7)

    2.- (5,-7/5) (-4,2/5)

    1. 👍 0
    2. 👎 0
    posted by karen
  2. Find the slope of 6,2

    1. 👍 0
    2. 👎 0
  3. Write f(x) = |4x + 2| without absolute value signs.

    1. 👍 0
    2. 👎 0
    posted by lisa
  4. axycdkp swty eqon pmwhy udxyvtfql etrn avxfpw

    1. 👍 0
    2. 👎 0
  5. the graph of the line through (2,3) that is perpendicular to the line with equation x=-1 also goes through which point?

    1. 👍 0
    2. 👎 0
  6. Which choice is the equation of a line that passes through the origin and is parallel to the line represented by this equation?

    4x− y = −8

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. algebra ll

    find the range of the relation (-1,4),(2,5), (3,5)then determine if the relation is a funtion or not thank u

    asked by natasha on August 8, 2008
  2. Algebra

    Find the range of the relation [(1, -4), (2,5), (3,5)]. Then determine whether the relation is a function.

    asked by Megan on January 17, 2013
  3. Math

    Find the domain and range of the relation, and state whether or not the relation is a function. {(3, 9), (3, 10), (3, 11), (3, 12)}

    asked by Anonymous on June 12, 2012
  4. math

    find the domain and range of the relation, and state whether or not the relation is a function. {(3,9), (3,10), (3,11), (3,12)}

    asked by yorkie16 on April 13, 2009
  5. algebra

    Find the domain and range of the relation, and state whether or not the relation is a function. {(3, 9), (3, 10), (3, 11), (3, 12)}

    asked by kara on December 14, 2009
  6. math

    find the domain and range of the relation and state whether or not the relation is a function. {(1,3), 2,3), (3,3), (4,3)}

    asked by yorkie16 on April 13, 2009
  7. Math

    Find the domain and range of the relation, and state whether or not the relation is a function (1,3)(2,3)(3,3)(4,3)

    asked by CC on June 7, 2011
  8. math

    indicates required items An operation * is defined by the relation x*y = 5x + 3y – 4xy. Evaluate [2*(-1) ] A. 15 B. 10 C. 8 D. -3 A B C D An operation * is defined by the relation x*y = 5x + 3y – 4xy. Evaluate (3*2)*4 A. -15

    asked by david dare on December 17, 2010
  9. Discrete Math

    Which of these relations on {0, 1, 2, 3} are equivalence relations? Justify the relation(s) that are not equivalent. R1: {(0,0), (1,1), (2,2), (3,3)} R2: {(0,0), (1,1), (1,3), (2,2), (2,3), (3,1), (3,2), (3,3)} R3: {(0,0), (0,1),

    asked by Laurey on February 8, 2011
  10. Math

    Let R1 be a binary relation on the set of integers defined as follows: R1 = {(x, y) / 4 divides x – y}. Determine whether the given relation R1 is an equivalence relation on the set {1, 2, 3, 4, 5}.

    asked by Julio on March 10, 2007
  11. algebra

    Determine whether the following relation represents a function. If the relation is a function then state domain and range? {(-1,-6),(2,-6),(3,-6),(4,-6)} Does the given relation represents a function? What is domain?

    asked by Sharday on May 22, 2013

More Similar Questions