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What is the equation of the line that has a -intercept of and passes through the point ?   

Use the two points to find the rise and the run. Then divide the rise by the run. That will give you the slope.

Substitute the slope for in the equation below. Then substitute the -coordinate of the -intercept for .

Use the eTool below to help you complete the problem.
Click the link at right for the full version of the eTool: 3-62 HW eTool