Question

A graph of the cost of gas purchased depending on the number of gallons pumprd has the points (4,15) and (8,30) what is the rate of change in the cost of the gas as each gallon is pumped

Answer 1

To find the rate of change in the cost of gas as each gallon is pumped, we can use the formula for calculating the slope of a line:

slope = (change in y-coordinates)/(change in x-coordinates)

Given the points (4,15) and (8,30), we can calculate the slope as follows:

change in y-coordinates = 30 - 15 = 15
change in x-coordinates = 8 - 4 = 4

slope = (15)/(4) = 3.75

Therefore, the rate of change in the cost of gas as each gallon is pumped is 3.75.