document.write( "Question 328045: (2,-1),m=-2/3
\n" ); document.write( "I can get most of the problem but get lost when with the end \n" ); document.write( "

Algebra.Com's Answer #234938 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
The formula is:
\n" ); document.write( " $\"%28y+-+y%5B1%5D%29%2F%28x+-+x%5B1%5D%29+=+m\"$
\n" ); document.write( "where( x[1],y[1]) = (2,-1)
\n" ); document.write( "plugging in numbers:
\n" ); document.write( " $\"%28y+-+%28-1%29%29%2F%28x+-+2%29+=+-2%2F3\"$
\n" ); document.write( "Multiply both sides by $\"3%2A%28x+-+2%29\"$
\n" ); document.write( " $\"3%2A%28y+%2B+1%29+=+-2%2A%28x+-+2%29\"$
\n" ); document.write( " $\"3y+%2B+3+=+-2x+%2B+4\"$
\n" ); document.write( " $\"3y+=+-2x+%2B+1\"$
\n" ); document.write( " $\"y+=+%28-2%2F3%29%2Ax+%2B+1%2F3\"$
\n" ); document.write( "Here's the plot:
\n" ); document.write( " $\"+graph%28+500%2C+500%2C+-5%2C+5%2C+-5%2C+5%2C+%28-2%2F3%29%2Ax+%2B+1%2F3%29+\"$ \n" ); document.write( "

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