Posted by daniel on Wednesday, March 13, 2013 at 9:44pm.
no, your rule does not work for the first one
but ....
when x = 1 , what is 1x1 ?
when x = 3 , what is 3x3 ?
when x = 5, what is 5x5 ?
can you see the pattern?
how about y = x*x or y = x^2
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