document.write( "Question 994033: The graph of Quadratic equation of opens up if(?) and down if(?). Explain why or how that statement is true.
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Algebra.Com's Answer #613230 by Boreal(15235) $\"\"$ $\"About$

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f(x)=-x^2. This opens up downward. As x^2 gets larger, -x^2 gets larger negative, so the graph goes down with increasing positive or negative x.
\n" ); document.write( "f(x)=x^2, here, when x is positive or negative x^2 is always positive, like the first case. But there is no negative sign in front of the x^2, so the graph opens upward.\r
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