# Activities

• • ##### Subject Area

• Mathematics: Algebra and Pattern: Algebra and Pattern
• Standard: National Curriculum 7-10: Number and Algebra: Patterns and algebra

• ##### Author Middle

200 Minutes

• ##### Device
• TI-30XB MultiView™

## Algebra Rules

#### Activity Overview

Students develop word rules and algebraic (linear) functions to describe real problems. They use calculator function table features to assist with the calculation of function values and interpret them in the given contexts. They compare pairs of linear functions in related but different contexts.

#### Objectives

• Model everyday problems using linear functions with rules of the form y = ax + b
• Generate function tables with/without technology
• Read x and y values from the function table
• Algebraic substitution to find values for y
• Algebraic solving to find values for x
• Restricting x values for models of linear functions
• Interpretation to explain the meaning of various x and y values
• The parameters a and b have meaning in the context of the original problem
• Use two linear functions to compare different but related contexts

#### Vocabulary

Algebraic rule, formula, linear functions, equations, models, input & output values, table of values, substitution, equation solving, equivalence