Years 7–10 · Australian curriculum
Year 9 Maths
Year 9 is where algebra and geometry start working together — linear relations, simultaneous equations, trigonometry and similarity all build on the Year 7–8 foundations and start pointing toward senior maths.
- Units
- 10
- Lessons
- 64
- Strands
- 3
How Maths Made Friendly approaches Year 9 Maths
Linear Relations is the largest unit in the Year 9 curriculum, and it's treated that way — more lessons, more worked examples, more chances to practise before moving on. Trigonometry and similarity both use interactive geometry tools so the relationships between angles, sides and shapes are something students can manipulate, not just memorise.
Who this is for
Ideal for students building toward senior maths, and for anyone who wants trigonometry and simultaneous equations explained step by step rather than all at once.
What students learn in Year 9 Maths
Organised by strand, matching the structure of the Australian Curriculum.
Number and Algebra
Index Laws
Number and Algebra6 lessons
- 1. Multiplying and Dividing Terms with Indices
- 2. The Power of a Power and Power of a Product
- 3. The Zero Index and Negative Indices
- +3 more
Linear Relations
Number and Algebra10 lessons
- 1. Patterns and Relationships
- 2. Coordinates and the Cartesian Plane
- 3. Tables of Values
- +7 more
Non-Linear Relationships
Number and Algebra6 lessons
- 1. Graphing Parabolas from a Table of Values
- 2. Features of Parabolas
- 3. Graphing Simple Exponential Relationships
- +3 more
Simultaneous Equations
Number and Algebra6 lessons
- 1. Solving Simultaneous Equations Graphically
- 2. Solving Simultaneous Equations by Substitution
- 3. Solving Simultaneous Equations by Elimination
- +3 more
Surds
Number and Algebra6 lessons
- 1. Identifying and Estimating Surds
- 2. Simplifying Surds
- 3. Adding and Subtracting Surds
- +3 more
Measurement and Geometry
Similarity
Measurement and Geometry6 lessons
- 1. Identifying Similar Figures
- 2. Finding the Scale Factor
- 3. Finding Unknown Sides in Similar Figures
- +3 more
Surface Area and Volume
Measurement and Geometry6 lessons
- 1. Surface Area of Cylinders
- 2. Volume of Cylinders
- 3. Surface Area of Composite Solids
- +3 more
Trigonometry
Measurement and Geometry6 lessons
- 1. The Trigonometric Ratios
- 2. Finding an Unknown Side Using Trigonometry
- 3. Finding an Unknown Angle Using Trigonometry
- +3 more
Statistics and Probability
Bivariate Data
Statistics and Probability6 lessons
- 1. Constructing and Reading Scatter Plots
- 2. Describing Correlation
- 3. The Line of Best Fit
- +3 more
Probability
Statistics and Probability6 lessons
- 1. Relative Frequency and Estimating Probability
- 2. Two-Step Experiments Without Replacement
- 3. Conditional Probability
- +3 more
Ready to start Year 9 Maths?
Jump in and start learning at your own pace.