\"slope\"\"

\

Since the line is raising the slope is positive.

\

Next, find the slope.

\

\"\"            

\

Substitute 7 for y2, 3 for y1, –1 for x2, and –1 for x1 in slope formula.

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\"\" \ \

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\"\"                  (Simplify) \ \

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\"\"                  (Subtract:\"\")

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\"\"                          (Add:\"\")

\

\"\"                          (Divide:\"\")\"\"

\

Slope is undefined.