**Question**

**Introduction**

This “Elementary”
Mathematics question is usually pitched at secondary 3 (» grade 9). It
is quite a standard type of question, but from my experience, many students do
not know how to begin. The wording of
the question (especially part (a)) may throw off some people. The first stage in solving any mathematics
question is always to make sure you

*understand the question*, to know what is expected of you. Once this is done, this question is actually quite straightforward if you*know what to do*and know*where to look*. The coefficient of*x*^{2}is*a*= 1, so the question is not that tricky. Part (a) is simply instructing you to*complete the square*.**Review**

**Solution**

**Tip:**You could get the

*y*-intercept by using your fingers to cover the

*x*

^{2}and

*x*terms. There is an even faster way: just look at the constant term! You get the answer 5 immediately!

H02. Use a diagram / model

H04. Look for pattern(s)

H05. Work backwards

H09. Restate the problem in
another way

H11. Solve part of the problem

**Suitable Levels**

*****GCE ‘O’ Level “Elementary” Mathematics

*****any syllabus that includes quadratic functions and parabolas

*****anyone who is interested

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