Find the constant of proportionality k if y = 71.5 when x = 13. (write your answer as a decimal.)
k =
using the k from above write the variation equation in terms of x.
y =
using the k from above find y given that x = 28.
y =

the third picture

step-by-step explanation:

answer: a) (0,0), (1,1), (2,8), and (3,27).

step-by-step explanation:

0^3=0

1^3=1

2^3=8

3^3=27

in effect, the exponential equation for this would me y=3^x. each x-coordinate cubed is giving the y coordinate, so a is your answer : )

a .4y4

hope this !