# Unit 3: Linear relationships

## Lesson 3: Representing proportional relationships

### Practice

Graphing proportional relationshipsGet 3 of 4 questions to level up!

## Lesson 4: Comparing proportional relationships

### Practice

Rates & proportional relationshipsGet 5 of 7 questions to level up!

## Lesson 9: Slopes don't have to be positive

### Practice

Intercepts from a graphGet 3 of 4 questions to level up!
Slope from graphGet 3 of 4 questions to level up!
Slope-intercept introGet 3 of 4 questions to level up!
Graph from slope-intercept formGet 3 of 4 questions to level up!
Slope-intercept equation from graphGet 3 of 4 questions to level up!

## Lesson 10: Calculating slope

### Learn

No videos or articles available in this lesson

### Practice

Slope from two pointsGet 3 of 4 questions to level up!

## Extra practice: Slope

### Practice

Slope-intercept from two pointsGet 3 of 4 questions to level up!

## Lesson 12: Solutions to linear equations

### Practice

Solutions to 2-variable equationsGet 3 of 4 questions to level up!

## Lesson 13: More solutions to linear equations

### Practice

Complete solutions to 2-variable equationsGet 3 of 4 questions to level up!

## Extra practice: Intercepts

### Practice

Intercepts from an equationGet 3 of 4 questions to level up!