Mathematics for IGCSE & O level - Sketching Curves (Section 1 - No. 36)
What is the shape of a quadratic graph when the coefficient of x² is positive?
A straight line.
An 'n' shape.
A curve that never crosses the x-axis.
A 'u' shape.
Explanation
When the coefficient of x² is positive, the quadratic graph is a 'u' shape.
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