document.write( "Question 976417: A (-1,2), B (3,a) and C (-3,7) are collinear. Find a \n" ); document.write( "
Algebra.Com's Answer #598040 by josgarithmetic(39618)\"\" \"About 
You can put this solution on YOUR website!
(1) Slope\r
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\n" ); document.write( "\n" ); document.write( "(2) Slope Again but using point B\r
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\n" ); document.write( "\n" ); document.write( "\"m=%287-2%29%2F%28-3-%28-1%29%29=5%2F-2=-5%2F2\"\r
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\n" ); document.write( "\n" ); document.write( "\"m=-5%2F2=%287-a%29%2F%28-3-3%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"%287-a%29%2F%28-6%29=-5%2F2\"
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