document.write( "Question 1001740: x:1,2,3,4,5
\n" ); document.write( "y:3.2 , 12.8 , 28.8 , 51.2 , 80.0\r
\n" ); document.write( "\n" ); document.write( "What is the relationship between x and y?
\n" ); document.write( "a. y is directly proportional to x
\n" ); document.write( "b. y is inversely proportional to x
\n" ); document.write( "c. y is proportional to x^2
\n" ); document.write( "d. y is independent of x
\n" ); document.write( "Thanks.\r
\n" ); document.write( "\n" ); document.write( "Please explain!!!!!!!!
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Algebra.Com's Answer #618832 by fractalier(6550)\"\" \"About 
You can put this solution on YOUR website!
Do you notice what happens to the y values as you change the x values?
\n" ); document.write( "As x doubles from one to two, y goes up by a factor of four.
\n" ); document.write( "As x goes from one to three, y goes up by a factor of nine...and so on...
\n" ); document.write( "Thus y is proportional to x^2.
\n" ); document.write( "Choice c.
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