Question

The graph of a function is a line that passes through the coordinates (2, 11) and (8, 14).

Part A
Which shows how to find the rate of change for the function?
Ο Α.
8-2
14-11
OB. 14-11
8-2
OC. 14-8
11-2
OD. 11-2
14-8

Answer 1

Part A: B

Part B: A

Explanation:

Part A: Slope is y/x, so you want to find the difference between the 2 points on the graph. You get y1 and subtract it from y2, then you get x1 and subtract it from x2, which leaves you with (y2-y1)/(x2-x1), which is (14-11)/(8-2).

Part B: You use your answer from part A and simplify it, which gives you 3/6, which is 1/2, and that is your slope, and you found your answer since only one answer has that slope.