Question

evaluate the function graphically.
find ( f(1) )

Explanation:

Step1: Locate x=1 on x-axis

Find the vertical line $x=1$ on the coordinate grid.

Step2: Identify corresponding y-value

The upper piecewise function has an open circle at $(1,6)$, and the lower piecewise function has a closed point at $(1,-8)$. The closed point represents the defined value of the function at $x=1$.

Answer:

$-8$