Question

Which equation represents a proportional relationship?

y=15x

y=−x

y = 5x + 1

y=−5(x+1)

Answer 1

I believe it is C (y=5x+1)

Explanation:

aim not 100% sure, but I think that it is correct because it shows that x goes up by 5 each time and y goes up by 1 each time