document.write( "Question 992920: Parabola with a vertex on the y-axis.\r
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Algebra.Com's Answer #612420 by ikleyn(52781)\"\" \"About 
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\n" ); document.write( "1. y = \"x%5E2\".\r
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\n" ); document.write( "\n" ); document.write( "2. y = \"x%5E2%2B1\".\r
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\n" ); document.write( "\n" ); document.write( "3. y = \"x%5E2-1\"\r
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