document.write( "Question 318599: i am not understanding how to find an equation of a line that has a slope of -8 and passes through (-1,5). Write in slope intercept form \n" ); document.write( "

Algebra.Com's Answer #228056 by JBarnum(2146) $\"\"$ $\"About$

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slope intercept form is $\"y=mx%2Bb\"$ where m=slope and b= intercept
\n" ); document.write( "you have the following:
\n" ); document.write( " $\"m=-8\"$
\n" ); document.write( " $\"x=-1\"$
\n" ); document.write( " $\"y=5\"$
\n" ); document.write( "substitute the letters for the numbers and solve for \"b\"
\n" ); document.write( " $\"y=mx%2Bb\"$
\n" ); document.write( " $\"5=%28-8%29%28-1%29%2Bb\"$ multiply -8 and -1
\n" ); document.write( " $\"5=%288%29%2Bb\"$ subtract 8
\n" ); document.write( " $\"-3=b\"$
\n" ); document.write( "

\n" ); document.write( "rewrite equation
\n" ); document.write( " $\"y=mx%2Bb\"$
\n" ); document.write( " $\"m=-8\"$
\n" ); document.write( " $\"-3=b\"$
\n" ); document.write( " $\"y=-8x-3\"$ \n" ); document.write( "

\n" );