A graph has time (hours) on the x-axis and total charge (dollars) on the y-axis. Points are at (0, 8), (2, 27), (4, 46), (6, 65).

Question

For the new year, the instructor is thinking of changing his rates. The equation of the possible new rates is represented in the graph. What is the y-intercept of the instructor's new rates?

( ____ , ____ )

Answer 1

The y-intercept of the instructor's new rates is the value of total charge (dollars) when time (hours) is equal to zero.

From the given points, we can see that when time (hours) is equal to 0, the total charge (dollars) is 8.

Therefore, the y-intercept of the instructor's new rates is (0, 8).