document.write( "Question 1141141: Find the x value so that the line through the points (x,-9) and (0,1) has a slope of -4.
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Algebra.Com's Answer #761673 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"+%28+1+-%28-9%29+%29+%2F+%28+0++-+x+%29+=+-4+\"$
\n" ); document.write( "This is [ change in y ] / [ change in x ] = slope
\n" ); document.write( " $\"+10+%2F+%28-x%29+=+-4+\"$
\n" ); document.write( " $\"+10+=+-4%2A%28-x%29+\"$
\n" ); document.write( " $\"+10+=+4x+\"$
\n" ); document.write( " $\"+x+=+2.5+\"$
\n" ); document.write( "--------------------
\n" ); document.write( "Check answer:
\n" ); document.write( " $\"+10+%2F+%28+0+-+2.5+%29+=+-4+\"$
\n" ); document.write( " $\"+10+=+10+\"$
\n" ); document.write( "OK \n" ); document.write( "

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