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?(1 point)
$
per gallon
To find the rate of change in the cost of gas per gallon, we need to calculate the slope of the line passing through the two given points.
Let's use the formula for slope:
slope = (change in y) / (change in x)
(change in y) = 30 - 15 = 15
(change in x) = 8 - 4 = 4
slope = 15 / 4
Therefore, the rate of change in the cost of gas as each gallon is pumped is $3.75 per gallon.
A linear graph of the cost of broccoli in dollars per pound has the points (3,8.25)
and (6,16.50)
. What is the rate of change in the purchase price in dollars per pound?(