Grade 8 · Expressions & Equations

Intro to functions

208 problems in this skill, each with a solver-verified answer key. Answers are checked the moment you submit — with a hint if you want one and a worked solution afterwards.

What the problems look like

A few statements from this skill. Answers, hints and worked solutions live in the practice session.

Warm-up
A function is defined by $f(x) = 5x + 9$ . Find $f(4)$ .
Warm-up
A function is defined by $f(x) = 7x + 6$ . Find $f(3)$ .
Warm-up
A function is defined by $f(x) = 2x + 6$ . Find $f(6)$ .

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