Question

Which of the following best describes the graph shown below?

• A. This is not the graph
of a function.
B. This is the graph of a one-to-one function.
C. This is the graph of a function, but it is
not one-to-one.
D. This is the graph of a linear function.

Answer 1

C

Explanation:

we see that for every y value used (except for 0), there are 2 x-values (left and right of the y-axis) that lead to the same y-value. so, this is mostly a 2-to-1, not a 1-to-1 function.

it is a function though, as every x-value has exactly 1 assigned y-value.