Mathematics for IGCSE & O level - Sketching Curves (Section 4 - No. 11)
What does the term 'turning point' refer to on a quadratic graph?
The x-intercepts of the graph.
The point where the graph crosses the y-axis.
The vertex, where the graph changes direction.
A point on the line of symmetry.
Explanation
The turning point is the vertex where the curve changes direction.
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