The three points (10,−15),(7,14)\displaystyle {\left({10},-{15}\right)},{\left({7},{14}\right)}(10,−15),(7,14) and (−15x−16,−5)\displaystyle {\left(-{15}{x}-{16},-{5}\right)}(−15x−16,−5) lie on the same line. Find a\displaystyle {a}a in lowest terms.
a=\displaystyle {a}=a= Preview Question 6
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