Question 618930
Upward, because the sign of the {{{ x^2 }}} term
is positive.
here's the plot of {{{ y = x^2 - 1 }}}
{{{ graph( 400, 400, -5, 5, -2, 6, x^2 - 1 ) }}}
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Here's the plot of {{{ y = -x^2 - 1 }}}
{{{ graph( 400, 400, -5, 5, -6, 2, -x^2 - 1 ) }}}