Mathematics for IGCSE & O level - Graphs Of Functions (Section 6 - No. 22)
When sketching a quadratic graph, what are the key points you should usually find?
The x-intercepts (roots)
The y-intercept
The vertex
The points where the graph crosses the y-axis.
Explicació
The key points are roots/x-intercepts, y-intercept, and the vertex (maximum or minimum point).