SOLUTION: a plumber charges $51 for 2 hours of work and $74.25 for 3/1/2 hours work. write an equation relating cost to number of hours worked

Question 664755: a plumber charges $51 for 2 hours of work and $74.25 for 3/1/2 hours work. write an equation relating cost to number of hours worked
Found 2 solutions by lynnlo, MathTherapy:
Answer by lynnlo(4176) (Show Source): You can put this solution on YOUR website!
($51*2h)($74.25*3 1/2h)
Answer by MathTherapy(10552) (Show Source): You can put this solution on YOUR website!

a plumber charges $51 for 2 hours of work and $74.25 for 3/1/2 hours work. write an equation relating cost to number of hours worked

Let the time (in hours) be x, and the dollar amount, y

We then have 2 points: (2, 51) and (3.5, 74.25)

Using these 2 points, along with the slope formula, we get m, or slope = 15.5

Using the slope, and the point (2, 51) in the point-slope formula: , we get:

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