sstrike's answer to Amanda's Secondary 3 E Maths Singapore question.

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sstrike
Sstrike's answer
5393 answers (A Helpful Person)
Once you get y-intercept (0,7)
U can mirror this point along the symmetry line x=2 to get the other point with the same y coordinator as y - intercept

Based on these 2 points N vertex point , u can easily sketch out the QE curve accordingly.