Open Up - Grade 8 - Mathematics - Unit 3 - Lesson 4

A contractor must haul a large amount of dirt to a work site. She collected information from two hauling companies. EZ Excavation gives its prices in a table. Happy Hauling Service gives its prices in a graph. How much would each hauling company charge to haul 40 cubic yards of dirt?

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8.EE.5

A contractor must haul a large amount of dirt to a work site. She collected information from two hauling companies. EZ Excavation gives its prices in a table. Happy Hauling Service gives its prices in a graph. Calculate the rate of change for each relationship. What do they mean for each company?

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8.EE.5

A contractor must haul a large amount of dirt to a work site. She collected information from two hauling companies. EZ Excavation gives its prices in a table. Happy Hauling Service gives its prices in a graph. If the contractor has 40 cubic yards of dirt to haul and a budget of $1000, which hauling company should she hire?

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8.EE.5

Andre and Priya are tracking the number of steps they walk. Andre records that he can walk 6000 steps in 50 minutes. Priya writes the equation y = 118x, where y is the number of steps and x is the number of minutes she walks, to describe her step rate. This week, Andre and Priya each walk for a total of 5 hours. Who walks more steps? How many more?

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8.EE.5

Select all the pairs of points so that the line between those points has slope \frac{2}{3}.

• (0, 0) and (2, 3)
• (0, 0) and (3, 2)
• (1, 5) and (4, 7)
• (-2, -2) and (4, 2)
• (20, 30) and (-20, -30)

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8.EE.5