Poh Wen Lin's answer to .....'s Secondary 3 A Maths Singapore question.

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Poh Wen Lin
Poh Wen Lin's answer
21 answers (A Helpful Person)
1st
This is the long winded explaination. However, the line of symmetry can be easily determined. As the curve is a parabola, the minimum/maximum point is the point of symmetry where the left and right halves are congruent.