x - 9 = 17,
x + 12 = 20,
2x = 16.
Volumne (gal) 4962--4754--3974
The equation in the slope-intercept form is and there will be gallons of water in the pool after and a half hours.
The equation of a line that passes through two points and is .
Take points and .
Here, .
The equation is :
The slope intercept form is , where is the slope and is the -intercept.
After and a half hours or minutes.
Put in the equation
So, there will be gallons of water in the pool after and a half hours.
Learn more about slope-intercept form here:
Answer:
Using the first two values in the table, we can first find the slope to write an equation of a line, so we have
[4754 - 4962 ] / [20 - 12 ] = -26
So we have
y - 4754 = -26(x - 20)
y - 4754 = -26x + 520
y = -26x + 5274
Let's confirm that the amount after 50 minutes is correct
y = -26(50) + 5274 = 3974
So after 2 + 1/2 hrs (150 min) we have
y = -26(150) + 5274 = 1374 gallons
Step-by-step explanation: