# Equations

Learn and practice solving equations and systems of linear equations with interactive resources from GeoGebra.

## Upper Elementary

### Value of a Variable in a Number Sentence

Find the value of a variable in a number sentence.

### Word Problems with One Unknown

Describe the meaning of an unknown in the context of a word problem.

## Middle School

### Direct Variation

Write equations to represent direct variation and use direct variation to solve number and word problems.

### Equations in Two Variables

Write an equation to describe the algebraic relationship between two defined variables in number and word problems, including recognizing which variable is dependent.

### Equations Involving Powers and Roots

Solve equations involving powers and roots by using inverse relationships.

### Graphing Systems of Linear Equations

Graphically solve systems of linear equations.

### Linear Equations and Inequalities in Word Problems

Write a problem given a simple linear equation or inequality.

### Number of Solutions to System of Equations

Determine whether a linear equation has one solution, infinitely many solutions, or no solution.

### One-step Linear Equations and Inequalities

Solve one-step linear equations and inequalities and graph solutions of the inequalities on a number line in number and word problems.

### Solving Linear Equations

Solve linear equations using the associative, commutative, distributive, and equality properties and justify the steps used.

### Systems of Linear Equations in Two or More Variables

Write and solve systems of linear equations in two or more variables algebraically in number and word problems.

### Translating Linear Equations and Inequalities

Write a linear equation or inequality to represent a given number or word problem; solve.

### Two-step Linear Equations and Inequalities

Solve two-step linear equations and inequalities and graph solutions of the inequalities on a number line.

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