document.write( "Question 571184: (-3,1) and (2,-2) \n" ); document.write( "
Algebra.Com's Answer #368318 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
\r
\n" ); document.write( "\n" ); document.write( "First let's find the slope of the line through the points and \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Note: is the first point . So this means that \"x%5B1%5D=-3\" and \"y%5B1%5D=1\".\r
\n" ); document.write( "\n" ); document.write( "Also, is the second point . So this means that \"x%5B2%5D=2\" and \"y%5B2%5D=-2\".\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"m=%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29\" Start with the slope formula.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"m=%28-2-1%29%2F%282--3%29\" Plug in \"y%5B2%5D=-2\", \"y%5B1%5D=1\", \"x%5B2%5D=2\", and \"x%5B1%5D=-3\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"m=%28-3%29%2F%282--3%29\" Subtract \"1\" from \"-2\" to get \"-3\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"m=%28-3%29%2F%285%29\" Subtract \"-3\" from \"2\" to get \"5\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "So the slope of the line that goes through the points and is \"m=-3%2F5\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Now let's use the point slope formula:\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"y-y%5B1%5D=m%28x-x%5B1%5D%29\" Start with the point slope formula\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"y-1=%28-3%2F5%29%28x--3%29\" Plug in \"m=-3%2F5\", \"x%5B1%5D=-3\", and \"y%5B1%5D=1\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"y-1=%28-3%2F5%29%28x%2B3%29\" Rewrite \"x--3\" as \"x%2B3\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"y-1=%28-3%2F5%29x%2B%28-3%2F5%29%283%29\" Distribute\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"y-1=%28-3%2F5%29x-9%2F5\" Multiply\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"y=%28-3%2F5%29x-9%2F5%2B1\" Add 1 to both sides. \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"y=%28-3%2F5%29x-4%2F5\" Combine like terms. note: If you need help with fractions, check out this solver.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "So the equation that goes through the points and is \"y=%28-3%2F5%29x-4%2F5\"\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );