Grade 8 Functions Quiz

A free Grade 8 Functions quiz. Play without signing up; sign in to save your score.

Grade 8 gradeMath subjectFree quiz

Grade 8 functions treat a rule that assigns each input exactly one output. Students use function notation, list domain and range from a table or graph, and compare linear versus nonlinear rates of change. A vertical line that hits a graph twice shows that the graph is not a function of x.

The Grade 8 Functions quiz is free to play without signing up. Sign in to save scores. Classic has a timer; Trivi gives three hearts; Learn is untimed with no score.

What you practice

These are the Grade 8 Functions skills this quiz is built around.

Decide whether a table, graph, or mapping represents a function of x.
Evaluate f(x) and state a reasonable domain and range from a graph or table.
Compare a constant rate of change with a nonlinear pattern in a table or graph.

A useful tip

Function notation f(3) means the output when the input is 3, not f times 3. Substitute 3 for x in the rule, then simplify.

Frequently asked questions

What does Grade 8 Functions practice?

Practice includes: Decide whether a table, graph, or mapping represents a function of x; Evaluate f(x) and state a reasonable domain and range from a graph or table; Compare a constant rate of change with a nonlinear pattern in a table or graph.

Is the Grade 8 Functions quiz free?

Yes. This quiz is free to play without signing up. Sign in to save your scores and progress.

What game modes can I use?

Classic has a timer; Trivi gives three hearts; Learn is untimed with no score.