Question

In three hours, James read 18 pages of his history book. In four hours, he read 21 pages. Write the equation of the line that passes through the two points that represent the data in the problem. Use the equation to predict how many pages James will read in six hours.

Answer 1

27

Explanation:

(3,18), (4,21)

M = (21-18)/(4-3) = 3

Y = mx + c

18 = 3(3) + c

C = 18 - 9 = 9

Y = 3x + 9

6 hours implies x=6

Y = 3(6) + 9 = 18 + 9 = 27

Num of pages = 27