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15 April, 15:45

A line has a slope of - 3 and a rise of 21, what is the run?

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  1. 15 April, 19:24
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    The run is - 7.

    Step-by-step explanation:

    Since we know that slope = rise/run, we can calculate the run by inputting the given numbers.

    So,

    -3 = 21/x and we need to solve for x.

    When we cross multiply we get - 3x=21.

    Then, divide - 3 on both sides and x = - 7
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