## How are things changing?

## Mathematics, Grade 9

MTH1W1 (Grade 9 De-streamed)

## Talking About Change

## Concepts

- dependent and independent variables
- describing rates of change from graphs

## Teacher Resources

## Other Resources and Links

## What is a Linear Relation?

## Concepts

- characteristics of linear relations
- making tables of values from word descriptions
- making graphs from word descriptions
- linear relations in real life

## Teacher Resources

## A Closer Look at Rate of Change

## Concepts

- finding rates from word descriptions
- finding rates from tables of values
- finding rates from graphs
- comparing rates of linear and non-linear relations

## Teacher Resources

## Connecting Representations

## Concepts

- equations of the form
*y*=start+rate**x* - linear and non-linear relations

## Teacher Resources

## Adding and Subtracting Polynomials

## Concepts

- adding and subtracting polynomials

## Teacher Resources

## Two-Step Equations

## Concepts

- solving two-step equations without fraction coefficients
- collecting like terms

## Problem Solving with Linear Relations

## Concepts

- solving for the independent variable in the equation of a linear relation
- interpreting the point of intersection for two linear relations