document.write( "Question 605673: which way the parabola opens?
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Algebra.Com's Answer #381774 by mathie123(224)\"\" \"About 
You can put this solution on YOUR website!
I have lame ways of remembering some things, this being one of them:
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\n" ); document.write( "If the a is negative, then your parabola is making a sad face (opening downwards)
\n" ); document.write( "If the a is positive, then your parabola is making a happy face (opening upwards)
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