ACARA AC9M9A06, Vary graph parameters

Year 9 · Algebra

Explore how changing parameters affects the graphs of related functions, connecting the graph and the algebra and generalising the patterns.

Below are free printable maths worksheets that support AC9M9A06. Print them as PDFs, or generate a fresh one. Every maths answer key is computed in code, so it is never wrong.

Teaching guide

What students learn

Explore how changing parameters affects the graphs of related functions, connecting the graph and the algebra and generalising the patterns.

How to teach it

Build algebra from arithmetic: use a variable to stand for an unknown, write the situation as an expression or equation, then keep both sides balanced when solving and check by substituting the answer back in.

Worked example

3x = 21

Answer: x = 7

Why: Divide both sides by 3: x = 21 ÷ 3 = 7

Generated and checked in code, so it is correct.

Watch out for

Treating the equals sign as 'work it out' rather than 'both sides are equal', dropping negative signs, and not applying an operation to every term.