• ##### Device
• TI-Nspire™ CX
• TI-Nspire™ CX CAS
• TI-Nspire™ Navigator™
• ##### Software

TI-Nspire™
TI-Nspire™ CAS

• ##### TI-Nspire Version

3.6

Middle Grades Math: What's in a Line?
by Texas Instruments - Action Consequence Lesson

Updated on November 05, 2014

#### Objectives

• Students will interpret the equation y = mx + b as defining a linear function, whose graph is a straight line.
• Students will be able to recognize equations as defining linear functions from those that are not linear.
• Students will reason abstractly and quantitatively.
• Students will look closely to discern a pattern or structure.

#### Vocabulary

• equation
• tables
• graph
• coordinates
• function
• linear function
• slope or rate of change

This lesson involves identifying linear functions.
As a result, students will:

• Plot points on the coordinate graph as they begin to determine features of a linear function.
• Plot new points for a visual check of the points "working" with the original plotted points.
• Examine and compare the final equations that appear for each example.
• See that equations in the form of y = mx + b represent linear functions and that other types of equations produce other functions or possibly non-functions.