Which equation(s) represents a proportional relationship?

A) y=7x²
B) y=2+3x
C) y=1/2x
D) y=5-x

B, C, D

Which equation(s) represents a proportional relationship?

A) 5+x
B) y=4x
C) 7x²
D) 2-x

A, B, D

1 answer

Remember that a proportional relationship between x and y means that y = kx. There can be no extra constants floating around.

A is a proportional relationship between y and x^2

Only C is a p.r between y and x.

For #2, same thing applies.