Mathematics for IGCSE & O level - Sketching Curves (Section 1 - No. 9)
Which of the following can represent a quadratic graph? (Select all that apply)
y = 3x + 2
y = x² - 4
y = (x - 1)² + 5
y = 1/x
Explanation
Both y = x² - 4 and y = (x - 1)² + 5 represent a quadratic graph because they include a squared term.
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