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When the squared term is positive, the parabola opens:
AInward
BUpward
CDownward
DSideways
Answer & Solution
Correct answer: B. Upward
1. The sign of the leading coefficient sets the orientation.
2. A quadratic equation in two variables graphs as a parabola.
3. When the squared term is positive, the parabola opens upward.
4. When the squared term is negative, the parabola opens downward.
_Source: OpenStax Elementary Algebra 2e (CC BY 4.0), Ch 10 'Quadratic Equations', sections 10.1-10.5_
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