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Type: Multiple-Choice
Category: Quadratic Equations and Expressions
Level: Grade 10
Standards: HSF-IF.C.7, HSF-IF.C.7a
Author: nsharp1
Last Modified: 8 months ago

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Quadratic Equations and Expressions Question

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Grade 10 Quadratic Equations and Expressions CCSS: HSF-IF.C.7, HSF-IF.C.7a

When graphing a quadratic function of the form [math]f(x) = ax^2 + bx + c[/math], the sign (positive or negative) of which of the following values indicates whether the function opens upwards or downwards?
  1. [math]4ac[/math]
  2. [math]b^2[/math]
  3. [math]c[/math]
  4. [math]a[/math]
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