Question

60 points

Which equation represents a proportional relationship?


A) y = 2 5 x


B) y = 1 3 x + 5


C) y = −3x − 1


D) y = 2x + 0.5

Answer 1

A) y = 2 5 x

Explanation:

Answer 2

choice A: y = 25*x

Explanation:

A proportional relationship between x and y would be y = 25*x

because y/x = 25 (a constant)

We could say that y = 2x + 0.5 can be a proportion relationship, but not between y and x directly.

y= 2* x + 2* (1/4) = 2* (x + 1/4)

and get : y / (x + (1/4) ) = 2 y and (x + (1/4)) are in a proportional relationship, except it would not be y and x .