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# Systems of Linear Equations Project

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## Zoe Girty

on 30 November 2012

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#### Transcript of Systems of Linear Equations Project

Which car is the better buy? Problem Zo's Cars
The Equations 2013 Toyota Yaris Solving The Equations Graph 2013 Toyota Yaris Price: \$16,480

30 mpg (city)

Price per Gallon of Gas: \$3.59

Price per Mile Driven: \$0.119 2013 Ford Fiesta Price: \$14,200

29 mpg (city)

Price per Gallon of Gas: \$3.59

Price per Mile Driven: \$0.124 y = 0.119 x + 16,480 2013 Ford Fiesta y = 0.124 x + 14,200 0.119 x + 16,480 = 0.124 x + 14,200 -0.119 x -0.119 x 0.005 x + 14,200 = 16,480 - 14,200 - 14,200 0.005 x = 2,280 /0.005 /0.005 x = 456,000 Conclusion The 456,000 miles driven shows that the Ford Fiesta is the better choice because it is cheaper. Also, I will never drive that far, so buying the Toyota Yaris would lose money. How many miles will the Ford Fiesta travel to become the same price as the Toyota Yaris? Answers to the questions Q: Which car is the better buy?

A: The Ford Fiesta because the 456,000 miles will never be driven

Q: How many miles will the Ford Fiesta travel to become the same price as the Toyota Yaris?

A: The answer is x from the equations above, 456,000 miles. By Zoë Girty tecca.com hhz-math.blogspot.com homecg.com
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