OpenStax, Elementary Algebra 2e §10.5 Graphing Quadratic Equations in Two Variables · Try It 3 · Algebra · Quadratics

Graphing Quadratic Equations in Two Variables · Try It 3

Determine whether each parabola opens upward or downward:
ⓐ $y = 2 x^{2} + 5 x - 2$ ⓑ $y = - 3 x^{2} - 4 x + 7$

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OpenStax, Elementary Algebra 2e · §10.5 Graphing Quadratic Equations in Two Variables · Try It 3

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