document.write( "Question 831313: The slope of AB is 2/5. A(3, k) is a point on the line AB.  Find k if B(-7, 0). \n" ); document.write( "
Algebra.Com's Answer #501234 by josgarithmetic(39617)\"\" \"About 
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Form the expression for slope using the given coordinates for A and B, and you already know this slope must be 2/5. Find k.\r
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\n" ); document.write( "\n" ); document.write( "(k-0)/(3-(-7))=2/5
\n" ); document.write( "k/10=2/5
\n" ); document.write( "k=20/5
\n" ); document.write( "k=4
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