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secondary 4 | A Maths
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secondary 4 chevron_right A Maths chevron_right Singapore

need help with qn 4 and 9b, pls explain too

Date Posted: 3 years ago
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Christmas MT
Christmas Mt's answer
3276 answers (A Helpful Person)
For the first question, recognise how to convert the standard forms. And work around it.

For the second question, find what is the k value, and then work towards an equation.
To plot a simple graph, see where are the usual coordinates, or x/y-intercept. In this case, you will recognise that p or q cannot be zero, if not the equation becomes undefined. Hence, the graph is for both positive and negative values of q, and it does not touch the y or x axis.