 Grade 8 Math: Solving Linear Equations in Two Variables

This topic covers solving a linear equation in two variables for a given variables. This series of three lessons is intended to teach the student the basics of solving linear equations in two variables to prepare them for converting between standard form and slope-intercept form of linear equations.

This topic furthers the students knowledge of equations with variables and shows them a different method to write a linear equation in two variables outside of slope-intercept form.

Solving an Equation for One Variable

This lesson teaches the student to solve a multivariable linear equation for a specified variable. Many examples show how to solve an equation for a specified variable.

Solving an Equation for One Variable – Actual Formulas

This lesson builds upon the foundation of the previous lesson to show how actual formulas that appear in the real world can be solved for a specified variable. This lesson includes how to solve for the height of a cylinder given its radius and the volume.

Forms of Linear Equations

This lesson introduces standard form of linear equations. It also includes examples that show how to convert between standard form and slope-intercept form.

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