18M.1.SL.TZ1.S_3

pestleMathematicsAISLPaper 118M· sl-2-2-functions-notation-domain-range-and-inverse-as-reflectionsource ↗

Consider a function f (x) , for −2 ≤ x ≤ 2 . The following diagram shows the graph of f.

On the grid above, sketch the graph of f ⁻¹.

Markscheme / solution

A1A1A1A1 N4

Note: Award A1 for evidence of approximately correct reflection in y = x with correct curvature.

(y = x does not need to be explicitly seen)

Only if this mark is awarded, award marks as follows:

A1 for both correct invariant points in circles,

A1 for the three other points in circles,

A1 for correct domain.

[4 marks]

Examiners’ report

[N/A]