Can someone tell me the answer and explanation? (you can do at least 2)

What is the slope of the line passing through the points (-5, 7) and (-3,5)?

Use corrrct notations to name the sides

This stem-and-leaf plot represents the heights of the students on ralph’s basketball team. one student’s height is missing from the plot. if the mean height of all the students on the team is 61 inches, what is the missing height? a. 55 in. b. 59 in. c. 61 in. d. 65 in.