Question

find the output, y, when the input, x, is 4.

y =

Explanation:

Step1: Locate x=4 on x-axis

Find the position of $x=4$ along the horizontal axis.

Step2: Find corresponding y-value

Trace vertically from $x=4$ to the graph, then horizontally to the y-axis. The point on the graph at $x=4$ has a y-value of $-2$.

Answer:

$-2$