To find the rate of change in the number of gallons in the pool after each hour has passed, we need to find the slope of the line passing through the points (1, 160) and (3, 80).
Slope (m) = (change in y)/(change in x)
m = (80 - 160)/(3 - 1)
m = (-80)/2
m = -40
Therefore, the rate of change in the number of gallons in the pool after each hour has passed is -40 gal/hr.
The graph shows the number of gallons in a wading pool that is being drained. Using the points (1, 160) and (3, 80) as (x1, 1) and (x2, 2), what is the rate of change in the number of gallons in the pool after each hour has passed?
(1 point)
• —40 gal./hr.
• 40 gal./hr-
140
gal/hr.
10 gal./hr.
1 answer