document.write( "Question 107070This question is from textbook
\n" ); document.write( ": find the values for m and b in the following system so that the solution to the system is (-3,4)\r
\n" ); document.write( "\n" ); document.write( "mx+3y=8
\n" ); document.write( "-3x+4y=b
\n" ); document.write( "

Algebra.Com's Answer #77874 by HyperBrain(694)\"\" \"About 
You can put this solution on YOUR website!
Since the solution is (-3,4) we will use x=-3 and y=4\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Substituting x=-3 and y=4 to \"mx%2B3y=8\"\r
\n" ); document.write( "\n" ); document.write( "\"-3m%2B3%284%29=8\"
\n" ); document.write( "\"-3m%2B12=8\"
\n" ); document.write( "\"-3m%2B12-12=8-12\"
\n" ); document.write( "\"-3m%2B0=-4\"
\n" ); document.write( "\"-3m=-4\"
\n" ); document.write( "\"%28-3m%29%2F%28-3%29=%28-4%29%2F%28-3%29\"
\n" ); document.write( "\"m=4%2F3\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Substituting x=-3 and y=4 to \"-3x%2B4y=b\",\r
\n" ); document.write( "\n" ); document.write( "\"-3%283%29%2B4%284%29=b\"
\n" ); document.write( "\"-9%2B16=b\"
\n" ); document.write( "\"b=7\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Power up,
\n" ); document.write( "HyperBrain!
\n" ); document.write( "
\n" );