Question

Identify which of the following functions is proportional.(1 point)
Responses

y=x+1/2

y equals x plus Start Fraction 1 over 2 End Fraction

y=1/2x

y equals Start Fraction 1 over 2 x End Fraction

y=x^(2)

y equals x squared

y=1/2 x

y equals Start Fraction 1 over 2 End Fraction x

Answer 1

A proportional function has form y = kx (passes through the origin). So the proportional one is y = (1/2)x.

y = x + 1/2 is not (nonzero intercept), and y = x^2 is not (nonlinear).