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You will compare the prices of two companies that provide the same service and decide when you get a better deal.

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Presentation on theme: "You will compare the prices of two companies that provide the same service and decide when you get a better deal."— Presentation transcript:

1 You will compare the prices of two companies that provide the same service and decide when you get a better deal.

2  Pick a service to research prices  Plumber  Taxi  Carpet cleaner  Rent a machine  Other idea get approved by Mrs. Anderson Talk to two different companies that perform this service. Get there prices and record the name of who you talked to.

3  John Smith Plumbing  This company charges a $50 service fee and $25 per hour while they are working on the plumbing.  John Smith  888.888.8888  All Day Plumbing  This company has no service fee and charges $35 per hour while they are working on the plumbing.  George Day  999.999.9999

4 WRITE AN EQUATION FOR EACH COMPANY EXPLAIN THE SLOPE AND Y-INTERCEPT AND WHAT THEY MEAN  John Smith Plumbing  y=25x+50  The slope is $25, for each hour of work the cost is $25.  The y-intercept is $50, the fee just to come and look at the problem is $50.  All Day Plumbing  y=35x  The slope is $35, for each hour of work the cost is $35.  The y-intercept is 0, this means they do not charge a fee for coming to my house

5 Graph the equations on one graph Label each line with the company name Label the point where the two graphs intersect. Label where you get a better deal.

6 SOLVE WITH ELIMINATION SOLVE WITH SUBSTITUTION  Show work

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