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Home > CC3 > Chapter 9 > Lesson 9.2.3 > Problem 9-90

9-90.
  1. Use the rule y = –2x + 5 to answer the questions below. 9-90 HW eTool (Desmos). Homework Help ✎

    1. What is the slope of the line?

    2. Where does the line cross the y-axis?

Pick two points on the line and find the change in y-values over the change in x-values to find the slope.
What do you get? Does this value correspond with a value in the rule above?

Where on the graph does the line cross the y-axis?
Also, logically, the graph will cross the y-axis when x = 0.
Using the rule, can you calculate this value?
What do you get? Does this value correspond with a value in the rule above?

(0, 5)

Use the eTool below to help you with this problem.
Click the link at right for the full version of the eTool: CC3 9-90 HW eTool