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On graph paper, graph if and .  

  1. Find the slope of and write an equation for the line.

    Draw a slope triangle.

  2. Find (the distance from to ).

    Think of how a slope triangle can be used to calculate .

  3. Are there any similarities to the calculations used in parts (a) and (b)? Any differences?

    One is a ratio (slope) while the other is a length (distance).

Use the eTool below to solve the problem.
Click the link at right for the full version of the eTool: 3-8 HW eTool