document.write( "Question 376371: The height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning, when graphed, the function gives a line with a slope of -0.6. Suppose that the height of the candle after 20 hrs is 12 centimeters. What was the height of the candle after 15 hrs? \n" ); document.write( "
Algebra.Com's Answer #267783 by ankor@dixie-net.com(22740)\"\" \"About 
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The height (in centimeters) of a candle is a linear function of the amount of
\n" ); document.write( " time (in hours) it has been burning, when graphed, the function gives a line
\n" ); document.write( " with a slope of -0.6.
\n" ); document.write( "Suppose that the height of the candle after 20 hrs is 12 centimeters.
\n" ); document.write( ":
\n" ); document.write( "Use the point/slope equation: y - y1 = m(x - x1)
\n" ); document.write( "where m =-.6; x = 20; y = 12
\n" ); document.write( ":
\n" ); document.write( "y - 12 = -.6(x - 20)
\n" ); document.write( "y - 12 = -.6x + 12
\n" ); document.write( "y = -.6x + 12 + 12
\n" ); document.write( "y = -.6x + 24, is the equation (y = length after x hours)
\n" ); document.write( ":
\n" ); document.write( "\"What was the height of the candle after 15 hrs?\"
\n" ); document.write( "y = -.6(15) + 24
\n" ); document.write( "y = -9 + 24
\n" ); document.write( "y = 15 inches after 15 hrs \n" ); document.write( "
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