## How can we describe the space around us?

## Mathematics, Grade 9

MTH1W1 (Grade 9 De-streamed)

## Working with Ordered Pairs

## Concepts

- Cartesian plane and Cartesian coordinates
- coordinates to describe location
- determining if a point satisfies a given linear or non-linear relation
- meaning of ordered pairs in different contexts
- identifying points of intersection

## Student Resources

## Relevant Links

## Slope

## Concepts

- definition of slope
- slope as rate of change

## Student Resources

## Relevant Links

*y = mx + b* FORM FOR THE EQUATION OF A LINE

## Concepts

- identifying slopes and
*y*-intercepts of lines - using slopes and
*y*-intercepts to graph lines - equations of lines using slopes and
*y*-intercepts

## Student Resources

## Relevant Links

## Equations of Lines Using Slope and a Point

## Concepts

- finding the equation of a line using its slope and a point on the line
- horizontal and vertical lines

## Student Resources

## Relevant Links

## Equations of Lines Using Two Points

## Concepts

- finding the equation of a line using two points on the line

## Student Resources

## Relevant Links

## Measurement Calculations

## Concepts

- perimeter, area, surface area and volume

## Relevant Links

## Sides of Right Triangles (The Pythagorean Theorem)

## Concepts

- side-length relationship for right triangles
- solving problems using the side-length relationship for right triangles
- origins of the “Pythagorean Theorem”

## Relevant Links

## Geometric Relationships in Design

## Concepts

- properties of triangles
- properties of circles