document.write( "Question 824518: If y is directly proportional to x and y=8 when x=10 what is the value of ywhen x=5
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Algebra.Com's Answer #496549 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! If y is directly proportional to x \n" ); document.write( "y = kx \n" ); document.write( "----- \n" ); document.write( "Solve for \"k\" using \"y=8 when x=10\" \n" ); document.write( "8 = k*10 \n" ); document.write( "k = 4/5 \n" ); document.write( "---- \n" ); document.write( "Equation: \n" ); document.write( "y = (4/5)x \n" ); document.write( "---- \n" ); document.write( "What is the value of y when x=5? \n" ); document.write( "--- \n" ); document.write( "y = (4/5)(5) \n" ); document.write( "-- \n" ); document.write( "y = 4 \n" ); document.write( "================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "------------------ \n" ); document.write( " \n" ); document.write( " |