Question

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

y=1/2 x
y equals Start Fraction 1 over 2 End Fraction x

y=1/2x
y equals Start Fraction 1 over 2 x End Fraction

y=x2
y equals x squared

y=x+1/2

Answer 1

A proportional (directly proportional) function has the form y = kx (passes through the origin, constant ratio y/x).

From the list:
- y = (1/2)x — proportional (k = 1/2).
- y = 1/(2x) — not proportional (inverse relation).
- y = x^2 — not proportional (ratio y/x = x varies).
- y = x + 1/2 — not proportional (nonzero intercept).