Author note — to cover (Higher)

Higher page. Read f(x) as the output at x; evaluate f(3), f(−2), 2f(1) and f(a) as an expression; solve f(x) = k for linear and quadratic rules. Out of scope: domain and range language, which is A level; inverse and composite functions are the sibling pages. (A7)

• Fluency — direct questions on function notation, limited to this lesson's stated scope (4 questions).
• Application — use the same skill in unfamiliar or contextual questions without introducing a later method (4 questions).
• Check — questions built around the exclusions and likely misconceptions named in the lesson brief (4 questions).