document.write( "Question 21914: y varies directly as the square of x. When y is 36, x is 2. Find y when x is 3. \n" ); document.write( "
Algebra.Com's Answer #10567 by venugopalramana(3286)![]() ![]() You can put this solution on YOUR website! y varies directly as the square of x. When y is 36, x is 2. Find y when x is 3. \n" ); document.write( " Y VARIES AS X OR VARIES DIRECTLY AS X MEANS Y=K*X WHERE K IS A CONSTANT.... \n" ); document.write( "Y VARIES INVERSELY AS X MEANS Y=K*(1/X)=K/X...WHERE K IS A CONSTANT..USEING THIS WE GET FOR DIRECT VARIATION \n" ); document.write( " Y=KX \n" ); document.write( "WHEN X=2,Y=36 SUBSTITUTING TO GET K ,WE HAVE \n" ); document.write( "36 =2K...OR K=36/2=18 \n" ); document.write( "SO SINCE K IS A CONSTANT WE HAVE Y=18X..SO WHEN X=3,WE HAVE \n" ); document.write( "Y=18X=18*3=54 \n" ); document.write( " |