Which equation represents a proportional relationship? y=-5 (x+1) y=15x y=-x y = 5x + 1

Answer:Non-proportional:

Y=mx+b

C AND D

Proportional:

Y=mx / y=kx

A AND B

you said which equation not equations so I think you messed up somewhere when providing the question because with the provided answer choices, there are 2 proportional relationships!

y = 15x

Step-by-step explanation:

A proportional relationship is of the form

y = kx ← k is the constant of proportionality

The only relationship fitting this relationship is

y = 15x with k = 15