Mathematics for IGCSE & O level - Sketching Curves (Section 5 - No. 3)
Which of the following methods could be used to sketch a quadratic graph?
Plotting a few points.
Completing the square.
Finding the x and y intercepts.
Calculating the area under the curve.
Forklaring
Plotting points, completing the square, and finding intercepts are methods to sketch quadratic graphs.