document.write( "Question 257387: How do you find the equation of a line using the information \"it passes through (3,-1) and (5,3)? \n" ); document.write( "

Algebra.Com's Answer #189317 by drk(1908) $\"\"$ $\"About$

You can put this solution on YOUR website!
Here are the points:
\n" ); document.write( "(3,-1) and (5,3)
\n" ); document.write( "step 1 - find the slope using the formula
\n" ); document.write( " $\"m+=+%28y2-y1%29%2F%28x2-x1%29\"$
\n" ); document.write( "putting in our coordinates, we get
\n" ); document.write( " $\"m+=+%283-%28-1%29%29%2F%285-3%29\"$
\n" ); document.write( "which is
\n" ); document.write( " $\"m+=+2\"$
\n" ); document.write( "step 2 - put slope and a point into the equation
\n" ); document.write( " $\"y+=+mx+%2B+b\"$
\n" ); document.write( " $\"3+=+5%2A2+%2B+b\"$
\n" ); document.write( "solve for b to get
\n" ); document.write( " $\"b+=+-7\"$
\n" ); document.write( "step 3 - write the answer as
\n" ); document.write( " $\"y+=+2x+-+7\"$ \n" ); document.write( "

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