## Algebra 1

### Linear Functions

Linear equations in two variables are often treated as linear functions. The lessons in this unit develop the concept of the slope of a line, relate slope to rate of change, and explore the relationship among tables, graphs and symbolic representations of a line. The activities include contextual applications of linear functions.

### Algebra 1: Linear Functions Activities

Title Type

#### Points on a Line

Develop an understanding of the slope of a line.

• 6242

#### Understanding Slope

Make connections between the sign of the ratio of the vertical and horizontal change as they relate to the sign of the slope.

• 6615

#### Horizontal and Vertical Lines

Examine the vertical and horizontal changes when moving from one point to another on a line.

• 5215

#### Slope as Rate

Investigate the idea of slope as rate of change.

• 5813

#### Two Variable Linear Equations

Investigate a point as the solution to a linear equation in two variables.

• 5125

#### Graphing Linear Equations

Students investigate how vertical transformations affect the graph and the equation of the line.

• 5638

#### Rate of Change

Interpret slope as a rate of change.

• 5189

#### Multiple Representations

Interpret slope as a rate of change in the context of a real-world situation.

• 5534

#### Dog Days or Dog Years?

Students use ordered pairs, table of values, and a scatter plot to determine a function that represents real world data.

• 6755

#### Trains in Motion

Compare and contrast the motion of two objects and how it corresponds to distance as a function of time.

• 5271

#### Multiple Representations

Interpret slope as a rate of change in the context of a real-world situation.

• 2480