Education Technology

# Activities

• ##### Subject Area

• Math: Algebra II: Rational Expressions
• Math: Developmental Mathematics - College: Graphs and Linear Functions

9-12

45 Minutes

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

TI-Nspire™
TI-Nspire™ CAS

2.0

## Constant of Variation

#### Activity Overview

Students explore how the constant of variation, k, affects the graph of direct and inverse variations.

#### Key Steps

• In this activity, students explore the effects of k, the constant of variation. They will first use the slider to change k and observe how the direct variation graph changes.

• For the application problem about direct variation, students will use a graph of the function and a point on the graph to determine the amount of money the employee will make for a certain number of hours.

• Students will investigate the effect of k on the graph of an inverse variation by dragging the slider. Also shown on the screen are a point, which can be moved, and the product of the x- and y-coordinates of this point.