Math

QuestionGraph the equation y32=3(x5)y-32=-3(x-5) to find how long it takes to empty the pool.

Studdy Solution

STEP 1

Assumptions1. The equation given is y32=3(x5)y-32=-3(x-5). yy represents the amount of water in the pool3. xx represents time in hours4. The slope of -3 represents the rate at which the pool is being emptied (3 units per hour)
5. The pool is completely empty when y=0y=0

STEP 2

First, we need to rewrite the equation in slope-intercept form (y=mx+by=mx+b), where mm is the slope and bb is the y-intercept.
y32=(x5)y-32=-(x-5)

STEP 3

istribute the -3 to both terms inside the parentheses.
y32=3x+15y-32=-3x+15

STEP 4

Add32 to both sides of the equation to isolate yy.
y=3x+15+32y=-3x+15+32

STEP 5

implify the equation.
y=3x+47y=-3x+47

STEP 6

Now that we have the equation in slope-intercept form, we can graph the function. The y-intercept is47 and the slope is -3, which means for every hour that passes, the amount of water in the pool decreases by3 units.

STEP 7

To find out how long it will take to completely empty the pool, we need to find the x-intercept of the graph. The x-intercept is the value of xx when y=0y=0.
0=3x+470=-3x+47

STEP 8

Add 3x3x to both sides of the equation to isolate xx.
3x=473x=47

STEP 9

Divide both sides of the equation by3 to solve for xx.
x=47/3x=47/3

STEP 10

Calculate the value of xx.
x=47/315.67x=47/3 \approx15.67It will take approximately15.67 hours to completely empty the pool.

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