Lesson 7.5: Quadratic Inequalities in Two Variables
Completion requirements
In this solar thermal power station, an array of parabolic troughs
focuses sunlight onto pipes to heat steam inside. The steam is then
transferred to a generating station, where it is used to turn turbines to produce electricity. How can you describe the sunlight that a particular trough will capture?
In Lesson 7.5, you will
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graph quadratic inequalities in two variables, and
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solve problems using quadratic inequalities.