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
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document.write( "Write an equation of the direct variation that includes the point (9,-12)\r
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document.write( "Thank you \n" );
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Algebra.Com's Answer #148575 by stanbon(75887)![]() ![]() ![]() 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( " |