document.write( "Question 177782: A student's test score was 684 on a scale of 200-800. Wire a linear equation to convert this score to a scale of 0-100. The test score 684 is equivalent to? \n" ); document.write( "
Algebra.Com's Answer #132782 by stanbon(75887) ![]() You can put this solution on YOUR website! A student's test score was 684 on a scale of 200-800. Write a linear equation to convert this score to a scale of 0-100. The test score 684 is equivalent to? \n" ); document.write( "------------------------------------------ \n" ); document.write( "Form: new scale reading = (slope)(old scale reading) + (intercept) \n" ); document.write( "Points: (200,0) (800,100) \n" ); document.write( "slope = (100-0)/(800-200) = 1/6 \n" ); document.write( "Intercept: 0 = (1/6)200 + b \n" ); document.write( "b = -100/3 \n" ); document.write( "------------------------ \n" ); document.write( "Equation: \n" ); document.write( "new scale read = (1/6)(old reading) - (100/3) \n" ); document.write( "------------ \n" ); document.write( "The test score 684 is equivalent to? \n" ); document.write( "new(684) = (1/6)684 -(100/3) \n" ); document.write( "new = 114 - 33 1/3 \n" ); document.write( "new = 80 2/3 \n" ); document.write( "================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |