Homework Explained - Math Practice 101

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Grade 8 HMH Go Math - Answer Keys
Chapter 3: Proportional Relationships; Lesson 3:Interpreting the Unit As Slope


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  • Question 10 (request help)

    Cycling

    The equation \(y =\cfrac{1}{9}\text{ x}\) represents the distance y, in kilometers, that Patrick traveled in x minutes while training for the cycling portion of a triathlon. The table shows the distance y Jennifer traveled in x minutes in her training. Who has the faster training rate?

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  H.O.T.  

  Focus on Higher Order Thinking  

  • Question 11 (request help)

    Analyze Relationships

    There is a proportional relationship between minutes and dollars per minute, shown on a graph of printing expenses. The graph passes through the point (1, 4.75). What is the slope of the graph? What is the unit rate? Explain.

  •    dollars per minute
  • Question 12 (request help)

    Draw Conclusions

    Two cars start at the same time and travel at different constant rates. A graph for Car A passes through the point (0.5, 27.5), and a graph for Car B passes through (4, 240). Both graphs show distance in miles and time in hours. Which car is traveling faster? Explain.

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  • Question 13 (request help)

    Critical Thinking

    The table shows the rate at which water is being pumped into a swimming pool. Use the unit rate and the amount of water pumped after 12 minutes to find how much water will have been pumped into the pool after \(13\large\frac{1}{2}\) minutes. Explain your reasoning.

  •     gallons

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