What are the coordinates of the reflection image of b after both reflections

Karianne and lucius are analyzing a linear function on a graph. karianne says that unit rate is equal to rate of change, but that slope is calculated differently. lucius says that unit rate, rate of change, and slope are calculated the same way. who is correct? explain your answer.

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

The measure of an angle is 117°. what is the measure of a supplementary angle?