Math Practice 101
Homework Explained - Math Practice 101

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Grade 8 HMH Go Math - Answer Keys
Chapter 4: Nonproportional Relationships; Lesson 3: Graphing Linear Nonproportional Relationships Using Slope and y-intercept


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  Guided Practice  

Graph each equation using the slope and the y-intercept.

  • Question 1 (request help)

    \(\text{y} = \large\frac{1}{2}\small\text{x} - 3\)


    slope = _____   y-intercept = _____
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  • Question 2 (request help)

    \(\text{y} = -3\text{x} + 2\)

    slope = _____   y-intercept = _____
  • Type below:
  • Question 3 (request help)

    A friend gives you two baseball cards for your birthday. Afterward, you begin collecting them. You buy the same number of cards once each week. The equation \(\text{y} = 4\text{x} + 2\) describes the number of cards, y, you have after x weeks.

    a. Find and interpret the slope and the y-intercept of the line that represents this situation. Graph \(\text{y} = 4\text{x} + 2\). Include axis labels.
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  • Question 3 (request help)

    b. Discuss which points on the line do not make sense in this situation. Then plot three more points on the line that do make sense.
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  Essential Question Check-In  

  • Question 4 (request help)

    Why might someone choose to use the y-intercept and the slope to graph a line?
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