document.write( "Question 108429This question is from textbook McDougal Littell Algebra 1
\n" ); document.write( ": what is y when (2, -15), (5, y), m= 4/5 \n" ); document.write( "

Algebra.Com's Answer #79060 by checkley71(8403) $\"\"$ $\"About$

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4/5=.8
\n" ); document.write( "m=(y2-y1)/x2-x1)
\n" ); document.write( ".8=(y+15)/(5-2)
\n" ); document.write( ".8=(y+15)/3 now cross multiply
\n" ); document.write( "y+15=3*.8
\n" ); document.write( "y+15=2.4
\n" ); document.write( "y=2.4-15
\n" ); document.write( "y=12.6 answer.
\n" ); document.write( "proof
\n" ); document.write( ".8=(12.6-15)/(5-2)
\n" ); document.write( ".8=2.4/3
\n" ); document.write( ".8=.8
\n" ); document.write( " \n" ); document.write( "

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