Question

Given the following graph, find the values of x that make this graph not a function.
Check comments for graph.

Answer 1

Well where does it fail the vert line test?

Answer 2

0?

A. 0 ≤ x ≤ 1.5
B. −3 < x ≤ −2
C. x < 0
D. x > 0

Answer 3

Hmm try again. Look at all the possibilities - If I put a ruler in a vertical position (parallel to the y axis) at 0, it only goes through the curve once. Where doe it do it more than once?