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2-9.

Write the equation for each graph.

  1. What is the -intercept? Pick two points and determine the slope.

  1. Refer to part (a).

  1. Which value ( or ) is equal to on this line? (Look at the point.)

    All vertical lines have undefined slope and an equation of the form .

  1. Refer to part (a).

Use the eTool below to check your answers by graphing your equation.
Click the link at right for the full version of the eTool: CCA2 2-9 HW eTool