Illustrative Math - Algebra 1 - Unit 7 - Lesson 9 - Formative Library | Library

Here is how Elena solves the quadratic equation x^{2}-3x-18=0.

Is her work correct? If you think there is an error, explain the error and correct it.
Otherwise, check her solutions by substituting them into the original equation and showing that the equation remains true.

Jada is working on solving a quadratic equation, as shown here.

She thinks that her solution is correct because substituting 5 for p in the original expression p{2}-5p gives 5^{2}-5(5), which is 25-25 or 0.

Explain the mistake that Jada made and show the correct solutions.

Choose a statement to correctly describe the zero product property.

If a and b are numbers, and a*b=0, then:

Which expression is equivalent to x^{2}-7x+12?

Select all the functions whose output values will eventually overtake the output values of function f defined by f(x)=25x^{2}.

This lesson is from Illustrative Mathematics. Algebra 1, Unit 7, Lesson 9. Internet. Available from https://curriculum.illustrativemathematics.org/HS/teachers/1/7/9/index.html ; accessed 26/July/2021.

IM Algebra 1, Geometry, Algebra 2 is © 2019 Illustrative Mathematics. Licensed under the Creative Commons Attribution 4.0 International License (CC BY 4.0).

The Illustrative Mathematics name and logo are not subject to the Creative Commons license and may not be used without the prior and express written consent of Illustrative Mathematics.

These materials include public domain images or openly licensed images that are copyrighted by their respective owners. Openly licensed images remain under the terms of their respective licenses. See the image attribution section for more information.

Illustrative Math - Algebra 1 - Unit 7 - Lesson 9

Here is how Elena solves the quadratic equation x^{2}-3x-18=0.Is her work correct? If you think there is an error, explain the error and correct it.Otherwise, check her solutions by substituting them into the original equation and showing that the equation remains true.

Jada is working on solving a quadratic equation, as shown here.She thinks that her solution is correct because substituting 5 for p in the original expression p{2}-5p gives 5^{2}-5(5), which is 25-25 or 0.Explain the mistake that Jada made and show the correct solutions.

Choose a statement to correctly describe the zero product property.If a and b are numbers, and a*b=0, then:

Which expression is equivalent to x^{2}-7x+12?

Select all the functions whose output values will eventually overtake the output values of function f defined by f(x)=25x^{2}.

Here is how Elena solves the quadratic equation x^{2}-3x-18=0.

Is her work correct? If you think there is an error, explain the error and correct it.
Otherwise, check her solutions by substituting them into the original equation and showing that the equation remains true.

Jada is working on solving a quadratic equation, as shown here.

She thinks that her solution is correct because substituting 5 for p in the original expression p{2}-5p gives 5^{2}-5(5), which is 25-25 or 0.

Explain the mistake that Jada made and show the correct solutions.

Choose a statement to correctly describe the zero product property.

If a and b are numbers, and a*b=0, then: