document.write( "Question 468280: If f(x)=-3x+2,what are the values of m and b , so that , f(mx+b)=2x-3 \n" ); document.write( "

Algebra.Com's Answer #321294 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
\n" );
document.write( "Hi,
\n" );
document.write( "f(x)=-3x+2
\n" );
document.write( "f(mx+b)= -3(mx+b)+2 = 2x-3
\n" );
document.write( "         -3mx-3b = 2x-5
\n" );
document.write( "         -3m = 2,  m = -2/3
\n" );
document.write( "          3b = 5,  b = 5/3\r
\n" );
document.write( "\n" );
document.write( "CHECKING our Answer***
\n" );
document.write( "-3(mx+b)+2 = -3((-2/3)x -3(5/3)+2 = 2x -3 \n" );
document.write( "

\n" );