2.2 Graphing quadratic inequalities in two variables

Graphing quadratic inequalities in two variables

Grab a pen and grid paper for this lesson. We will learn the tricks on graphing quadratic inequalities in two variables.

Lessons

    • a)
      y=13x223x83y = \frac{1}{3}{x^2} - \frac{2}{3}x - \frac{8}{3}
    • b)
      y13x223x83y \ge \frac{1}{3}{x^2} - \frac{2}{3}x - \frac{8}{3}
    • c)
      yy < 13x223x83\frac{1}{3}{x^2} - \frac{2}{3}x - \frac{8}{3}
    • a)
      y=x24xy = - {x^2} - 4x
    • b)
      yy > x24x - {x^2} - 4x
    • c)
      yx24xy \le - {x^2} - 4x
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Graphing quadratic inequalities in two variables

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