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OpenStudy (anonymous):
a line passes through A(3,7) and B(-4,9). Find the value of a if C (a,1) is on the line.
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OpenStudy (anonymous):
Equation of the line is (9-7)/(-4-3) = (7-1)/(3-a) 2/-7=6/(3-a) 3-a=-7*6/2 a=24
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