Mathematics for IGCSE & O level - Sketching Curves (Section 4 - No. 19)
What is the purpose of the line of symmetry in a parabola?
It intersects the x-axis
It cuts the graph in half, reflecting each side.
It passes through the y-intercept
It indicates the roots of the quadratic.
Explanation
The line of symmetry divides the parabola into two mirror images.
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