document.write( "Question 168447: Find an quation of variation where y varies directly as the square of x, and where y=0.40 when x=0.1.The equation of variation is y= \n" ); document.write( "

Algebra.Com's Answer #124139 by eggsarecool(46) $\"\"$ $\"About$

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when they say y varies directly that just means $\"y=x%5E2\"$ now the trick is getting the numbers, so right now if we make $\"x=0.1\"$ then $\"y=0.01\"$ , this is not what we want, now to make 0.01 into 0.4 you multiply by 40, and do the same to the equation, so now $\"y=40x%5E2\"$ , and if you plug 0.1 in you get $\"y=40%2A0.1%2A0.1=0.4\"$ \n" ); document.write( "

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