Question

9)
domain:
range:

Explanation:

The domain is the set of all x-values represented by the points on the graph. The visible points have x-values: 0, 4, 6.
The range is the set of all y-values represented by the points on the graph. The visible points have y-values: -30, -25, 15.

Answer:

Domain: $\{0, 4, 6\}$
Range: $\{-30, -25, 15\}$