Question

The points (1, 5), (5, 10), (7, 8) and (8, 1) are on the graph of the function p. Which expression below gives the average rate of change of the function p on 5 ≤ x ≤ 8?

1. 1-5/1-10
2. 8-5/7-1
3. 1-10/8-5
4. 7-1/8-5

Answer 1

c

Explanation:

Answer 2

option C

Explanation:

The points (1, 5), (5, 10), (7, 8) and (8, 1) are on the graph of the function p

To find average rate of change of the function p on 5 ≤ x ≤ 8

we pick two points (5,10) and (8,1)

we apply slope formula

`slope = (y_2-y_1)/(x_2-x_1)`

(5,10) is (x1,y1) and (8,1) is (x2,y2)

Plug in the values in the formula

`slope = (1-10)/(8-5)`

option C is correct