A graph of the cost of gas purchased depending on the number of gallons pumped 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
To find the rate of change in the cost of gas as each gallon is pumped, we can use the formula for the slope of a line:
slope = (change in y) / (change in x)
Where:
- change in y = difference in cost of gas (y) = 30 - 15 = 15
- change in x = difference in number of gallons pumped (x) = 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.