document.write( "Question 470143: How do I graph 6x-3y=9, if it isn't in y=mx+b form? \n" ); document.write( "
Algebra.Com's Answer #322502 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
\r
\n" ); document.write( "\n" ); document.write( "\"6x-3y=9\" Start with the given equation.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"-3y=9-6x\" Subtract \"6x\" from both sides.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"-3y=-6x%2B9\" Rearrange the terms.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"y=%28-6x%2B9%29%2F%28-3%29\" Divide both sides by \"-3\" to isolate y.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"y=%28%28-6%29%2F%28-3%29%29x%2B%289%29%2F%28-3%29\" Break up the fraction.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"y=2x-3\" Reduce.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Looking at \"y=2x-3\" we can see that the equation is in slope-intercept form \"y=mx%2Bb\" where the slope is \"m=2\" and the y-intercept is \"b=-3\" \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Since \"b=-3\" this tells us that the y-intercept is .Remember the y-intercept is the point where the graph intersects with the y-axis\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "So we have one point \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Now since the slope is comprised of the \"rise\" over the \"run\" this means\r
\n" ); document.write( "\n" ); document.write( "\"slope=rise%2Frun\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Also, because the slope is \"2\", this means:\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"rise%2Frun=2%2F1\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "which shows us that the rise is 2 and the run is 1. This means that to go from point to point, we can go up 2 and over 1\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "So starting at , go up 2 units \r
\n" ); document.write( "\n" ); document.write( "\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "and to the right 1 unit to get to the next point \r
\n" ); document.write( "\n" ); document.write( "\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Now draw a line through these points to graph \"y=2x-3\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " So this is the graph of \"y=2x-3\" through the points and
\n" ); document.write( "
\n" );