Solved on Oct 30, 2023

Appliance repair man charges 75/hourplus75/hour plus 125 fee. Let yy be total cost and xx be hours worked. Find the equation in slope-intercept form.

STEP 1

Assumptions1. The repair man charges 75perhourofwork.Therepairmanchargesafixedfeeof75 per hour of work. The repair man charges a fixed fee of 125 to drive to your home3. Let yy represent the total cost4. Let xx represent the number of hours he works

STEP 2

We need to find the equation in slope-intercept form that represents this situation. The slope-intercept form of a linear equation is given byy=mx+by = mx + bwhere mm is the slope of the line and bb is the y-intercept.

STEP 3

In this case, the slope mm represents the rate at which the total cost yy increases with each additional hour of work xx. This is given by the repair man's hourly rate, which is $75.
So, m=75m =75.

STEP 4

The y-intercept bb represents the initial cost before any hours of work. This is given by the repair man's drive fee, which is $125.
So, b=125b =125.

STEP 5

Now, we can substitute the values of mm and bb into the slope-intercept form of the equation to find the equation that represents this situation.
y=mx+by = mx + b

STEP 6

Substitute m=75m =75 and b=125b =125 into the equation.
y=75x+125y =75x +125This is the equation in slope-intercept form that represents the situation. The total cost yy is equal to 75timesthenumberofhoursofwork75 times the number of hours of work x,plusafixedfeeof, plus a fixed fee of 125.

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