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8 votes
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The line containing (9, x) and (3, 6) has slope of x/-3 Find the value of x.

User Sherria
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1 Answer

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17 votes

\begin{gathered} \text{slope}=(y_2-y_1)/(x_2-x_1) \\ (x)/(-3)=(6-x)/(3-9) \\ (x)/(-3)=(6-x)/(-6) \\ -6x=-18+3x \\ 9x=18 \\ x=2 \end{gathered}

User Mark Gerolimatos
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