document.write( "Question 198108: I tried to figure this problem out and I got y = -12/9x. I am not sure if it is right and I need help Thank You.\r
\n" ); document.write( "\n" ); document.write( "Write an equation of the direct variation that includes the point (9,-12)\r
\n" ); document.write( "\n" ); document.write( "Thank you
\n" ); document.write( "

Algebra.Com's Answer #148575 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
I tried to figure this problem out and I got y = -12/9x. I am not sure if it is right and I need help Thank You.
\n" ); document.write( "Write an equation of the direct variation that includes the point (9,-12)
\n" ); document.write( "-------------------------
\n" ); document.write( "y = kx expresses direct variation between the variables x and y.
\n" ); document.write( "---------
\n" ); document.write( "Knowing that y = -12 when x = 9 allows you to solve for \"k\":
\n" ); document.write( "-12 = k(9)
\n" ); document.write( "k = -4/3
\n" ); document.write( "------------
\n" ); document.write( "So the equation you want is y = (-4/3)x
\n" ); document.write( "==============================================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "
\n" ); document.write( "
\n" );