Question

The graph represents a function. Find the input value corresponding to an output of 2.

Answer 1

-2

Explanation:

Input values are x-values plotted on the horizontal axis (x-axis) while the output values are plotted on the vertical axis (y-axis).

We are expected to determine what the value of x is on the x-axis, that corresponds to the y-value of 2 on the y-axis.

When y = 2 on the x-axis, x = -2 on the x-axis.

The input value of -2, corresponds to the output value of 2.

Answer 2

The input value is -2

Explanation:

Input values are x-values plotted on the horizontal axis (x-axis) while the output values are plotted on the vertical axis (y-axis).

What we are simply asked to do is to determine what the value of x is on the x-axis, that corresponds to the y-value of 2 on the y-axis.

Thus, when y = 2 on the x-axis, x = -2 on the x-axis.

The input value of -2, corresponds to the output value of 2.