IB skill practice

Identify key features of quadratic functions

Find intercepts, axis of symmetry, vertex, domain, and range from a quadratic in expanded or factorised form, with solution language suitable for IB markschemes.

Paper 1 6 marks Difficulty 3

Compare expanded and factorised information

The same quadratic can be written as \(f(x)=-2x^{2} + 10x - 8\) and \(f(x)=-2(x - 1)(x - 4)\). Use the most useful form to find the \(x\)-intercepts, \(y\)-intercept, axis, vertex, and range.

Worked practice: read the quadratic graph

Work through the graph features in order. You can type plain text or LaTeX-style notation.