document.write( "Question 408184: Suppose that the weight (in pounds) of an airplane is a linear function of the total amount of fuel (in gallons) in its tank. When graphed, the function gives a line with a slope of 6. \r
\n" ); document.write( "\n" ); document.write( "With 53 gallons of fuel in its tank, the airplane has a weight of 2318 pounds. What is the weight of the plane with 28 gallons of fuel in its tank?
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Algebra.Com's Answer #287627 by ankor@dixie-net.com(22740)\"\" \"About 
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Suppose that the weight (in pounds) of an airplane is a linear function of the
\n" ); document.write( "total amount of fuel (in gallons) in its tank.
\n" ); document.write( " When graphed, the function gives a line with a slope of 6.
\n" ); document.write( "With 53 gallons of fuel in its tank, the airplane has a weight of 2318 pounds.
\n" ); document.write( ":
\n" ); document.write( "Use the point/slope formula y - y1 = m(x - x1): where
\n" ); document.write( "x1 = 53
\n" ); document.write( "y1 = 2318
\n" ); document.write( "m = 6
\n" ); document.write( ":
\n" ); document.write( "y - 2318 = 6(x - 53)
\n" ); document.write( "y - 2318 = 6x - 318
\n" ); document.write( "y = 6x - 318 + 2318
\n" ); document.write( "y = 6x + 2000
\n" ); document.write( ":
\n" ); document.write( " What is the weight of the plane with 28 gallons of fuel in its tank?
\n" ); document.write( "x = 28
\n" ); document.write( "y = 6(28) + 2000
\n" ); document.write( "y = 168 + 2000
\n" ); document.write( "y = 2168 lb with 28 gal of fuel \n" ); document.write( "
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