document.write( "Question 778705: hello. my question is\r
\n" ); document.write( "\n" ); document.write( "write the equation of the line:\r
\n" ); document.write( "\n" ); document.write( "that passes through points (8,-13) and (-4,5) in slope intercept form. \n" ); document.write( "

Algebra.Com's Answer #474912 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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write the equation of the line:\ that passes through points
\n" ); document.write( " (8,-13) and (-4,5) in slope intercept form.
\n" ); document.write( ":
\n" ); document.write( "The slope/intercept form: mx + b = y
\n" ); document.write( "Replace x and y to form two slope/intercept equations:
\n" ); document.write( "8m + b = -13
\n" ); document.write( "-4m + b = 5
\n" ); document.write( "-------------subtraction eliminates b, find m
\n" ); document.write( "12m = -18
\n" ); document.write( "m = -18/12
\n" ); document.write( "m = -1.5
\n" ); document.write( "Find b using the 2nd equation
\n" ); document.write( "-4(-1.5) + b = 5
\n" ); document.write( "+6 + b = 5
\n" ); document.write( "b = 5 - 6
\n" ); document.write( "b = -1
\n" ); document.write( ":
\n" ); document.write( "The equation: y = -1.5x - 1
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\n" ); document.write( ":
\n" ); document.write( "Check solutions in the 1st equation
\n" ); document.write( "8(-1.5) - 1 = -13
\n" ); document.write( "-12 - 1 = -13 \n" ); document.write( "

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