Question

Please answer quickly.

1. For the equation -4y=8x, what is the constant variation?


A -4

B -2

C 1

D 2


2. Suppose y varies with x, and y = 24 when x = 8. What is th e value of y when x = 10?


A 10

B 30

C 80

D 240


3. What is an equation for the line with slope 2/3 y-intercept 9?


A y=2/3x

B y=9x

C y=2/3x+9

D y=9x+2/3


4. What is an equation in slope-intercept form for the line that passes through the points (1,-3) and (3,1)?

A y=3x+1
B y=x-3
C y=2x+5
D y=2x-5

Answer 1

1) the constant variation is B) -2

3) the equation of the line is C) y=2/3x+9

4) the equation of the line is D) y=2x-5