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A line has a slope of \(-\frac{3}{7}\) and its y-intercept is (0,18). What is its x-intercept?

 Jun 24, 2020
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Its x-intercept is (x, 0). 

The slope is \(\frac{0-18}{x-0}=\frac{-18}{x}\)

We are told this equals -3/7 so \(\frac{-18}{x}=\frac{-3}{7}\).

Solving for x, we find that the x-intercept is (42,0)

 Jun 24, 2020

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