Question

Which equation is a direct variation function?
y = x
y = 1/4 x + 2
y = x2
y = 4

Answer 1

Answer:

y = x

Step-by-step explanation:

Only y = x is a direct variation function.  The graph of this function is a straight line which passes through the origin (which are two requirements of a direct variation function).

Answer 2

Answer:

y = x

Hope dis helps ;)