Quadratic functions

Recognise and determine features of the graphs of 𝑦 = 𝑥2, 𝑦 = 𝑎𝑥2 + 𝑏𝑥 + 𝑐, 𝑦 = 𝑎(𝑥 − ℎ)2 + 𝑘 and 𝑦 = 𝑎(𝑥 − 𝑥1)(𝑥 − 𝑥2), including their parabolic nature, turning points, axes of symmetry and intercepts.