document.write( "Question 267334: I need to find the equation of the line with the slope 4 and passing through (-2,7). Can you help me? \n" ); document.write( "

Algebra.Com's Answer #196215 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
The equation to use is:
\n" ); document.write( " $\"%28y+-+y%5B1%5D%29%2F%28x+-+x%5B1%5D%29+=+m\"$
\n" ); document.write( "where $\"m\"$ = slope
\n" ); document.write( " $\"y%5B1%5D+=+7\"$
\n" ); document.write( " $\"x%5B1%5D+=+-2\"$
\n" ); document.write( "Plugging in numbers:
\n" ); document.write( " $\"%28y+-+7%29%2F%28x+-+%28-2%29%29+=+4\"$
\n" ); document.write( " $\"%28y+-+7%29%2F%28x+%2B+2%29+=+4\"$
\n" ); document.write( "Multiply both sides by $\"x+%2B+2\"$
\n" ); document.write( " $\"y+-+7+=+4%2A%28x+%2B+2%29\"$
\n" ); document.write( " $\"y+-+7+=+4x+%2B+8\"$
\n" ); document.write( " $\"y+=+4x+%2B+15\"$
\n" ); document.write( "check answer:
\n" ); document.write( "does it pass through (-2,7)?
\n" ); document.write( " $\"7+=+4%2A%28-2%29+%2B+15\"$
\n" ); document.write( " $\"7+=+-8+%2B+15\"$
\n" ); document.write( " $\"7+=+7\"$
\n" ); document.write( "OK \n" ); document.write( "

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