Online College Courses for Credit

Linear Equations in x - 8.4 - Lesson 3

Linear Equations in x - 8.4 - Lesson 3

Author: Todd Parks
See More

Try Our College Algebra Course. For FREE.

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to many different colleges and universities.*

Begin Free Trial
No credit card required

29 Sophia partners guarantee credit transfer.

314 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 26 of Sophia’s online courses. Many different colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.


Student Outcomes

Student Outcomes

1. Students know that a linear equation is a statement of equality between two expressions. 

2. Students know that a linear equation in x  is actually a question:  Can you find all numbers x, if they exist, that satisfy a given equation?  Students know that those numbers x that satisfy a given equation are called solutions.

Lesson Questions / Review

- We know that equations are statements about equality.  That is, the expression on the left side of the equal sign is equal to the expression on the right side of the equal sign. 

- We know that a solution to a linear equation in x will be a number, and that when all instances of x are replaced with the number, the left side will equal the right side. 

Lesson Summary

Evaluate Equations Using Substitution

IXL - Sixth grade - P.7 Evaluate multi-variable expressions

Use the following practice to enhance what you have learned.

Printable Blank Student Copy of Lesson 3

Module 4 - Lesson 3


Instructions for Lesson 3

Module 4 - Lesson 3