document.write( "Question 271328: Please show me how to graph 15x-5y=45 using the x- and y-intercepts. What is the slope and the y intercept in the problem? \n" ); document.write( "
Algebra.Com's Answer #198663 by Zyzden(7)\"\" \"About 
You can put this solution on YOUR website!
1.) First to make our lives easier, let us right this equation in standard form; ie: y=function of x --> in our case lets first subtract 15x from both sides
\n" ); document.write( " --> \"-5y=-15x%2B45\"\r
\n" ); document.write( "\n" ); document.write( "Next let's divide both sides by -5
\n" ); document.write( "--> \"y=3x-9\"\r
\n" ); document.write( "\n" ); document.write( "Now we are in standard form.\r
\n" ); document.write( "\n" ); document.write( "2.) To find the y-intercepts (where the graph crosses the y-axis) we simply plug 0 in for x and solve for y.
\n" ); document.write( "--> \"y=%283%2A0%29-9\" --> \"y=-9\"; this tells us our graph crosses the y-axis at -9.\r
\n" ); document.write( "\n" ); document.write( "3.) To find the x-intercepts (where the graph crosses the x-axis) we simply plug 0 in for y and solve for x.
\n" ); document.write( "--> \"0=3x-9\" --> \"9=3x\" --> \"x=3\"; this tells us our graph crosses the x-axis at 3.\r
\n" ); document.write( "\n" ); document.write( "If you plot these two points [(0,-9) & (3,0)] and draw a line between them, you have the graph of your equation\r
\n" ); document.write( "\n" ); document.write( "GRAPH:
\n" ); document.write( "\"graph%28300%2C+200%2C+-10%2C+10%2C+-10%2C+10%2C+3x-9%29\"
\n" ); document.write( "
\n" );