Illustrative Math - Algebra 1 - Unit 7 - Lesson 18 - Formative Library | Library

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Priya found x=3 and x=-1 as solutions to 3x^{2}-6x-9=0. Is she correct? Show how you know.

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What are the solutions to the equation 2x^{2}-5x-1=0?

x=\frac{-5\pm \sqrt{17}}{4}

x=\frac{5\pm \sqrt{17}}{4}

x=\frac{-5\pm \sqrt{33}}{4}

x=\frac{5\pm \sqrt{33}}{4}

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6.EE.2.c

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Here are the graphs of three equations.
Match each graph with the appropriate equation.

		x
		y
		z

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This lesson is from Illustrative Mathematics. Algebra 1, Unit 7, Lesson 18. Internet. Available from https://curriculum.illustrativemathematics.org/HS/teachers/1/7/18/index.html ; accessed 26/July/2021.

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