Connect the ideas
A function assigns one output to each permitted input. State the input restrictions before describing its range.
For a line y=mx+c, m describes the change in y for a one-unit increase in x; c is the value at x=0.
Find an intersection by satisfying both equations, and check the result in both.
Inverse proportion and circles are not straight-line models; identify their restrictions and geometric features.
Practice tests
Complete each paper and show your working.
Functions and straight-line graphs — Practice test 1
10 questions · 46 marks · 70 minutes · Scientific calculator
Functions and straight-line graphs — Practice test 2
10 questions · 42 marks · 70 minutes · Scientific calculator
Functions and straight-line graphs — Practice test 3
10 questions · 43 marks · 70 minutes · Scientific calculator
Functions and straight-line graphs — Practice test 4
10 questions · 44 marks · 70 minutes · Scientific calculator
Functions and straight-line graphs — Practice test 5
10 questions · 50 marks · 75 minutes · Scientific calculator
