GCSE Maths Practice: graphs-of-quadratic-functions

Question 7 of 10

Find the vertex of a quadratic function.

\( \text{Find the vertex of the quadratic function } y = -x^2 - 6x + 8. \)

Choose one option:

Compute x from the axis of symmetry formula and substitute to find y.

Vertex is \((x, y)\) where x = -b/(2a) and y is computed by substitution.