document.write( "Question 605673: which way the parabola opens?
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Algebra.Com's Answer #381774 by mathie123(224)![]() ![]() ![]() You can put this solution on YOUR website! I have lame ways of remembering some things, this being one of them: \n" ); document.write( "With your equation in the form \n" ); document.write( " \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) \n" ); document.write( " |