Question

Which equation represents a function?

A. x=13
B. x-12=34
C.2y=-12
D. 2x-4x=7
E. x/2=15

Answer 1

Answer: C.2y=-12

Explanation:

Answer 2

C. It is a function.

Explanation:

2y = -12

or y = -6.

The graph of y = -6 is a horizontal line passing through (0, -6) and a vertical line will intersect it at only one point so it is a function.

The other equations are all vertical lines so are not functions.