Julia's answer to Danielle's Secondary 4 E Maths Singapore question.

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Julia
Julia's answer
18 answers (A Helpful Person)
You mean this part?
Danielle
Danielle
5 years ago
yepp!!
Julia
Julia
5 years ago
Oh I took the 1/2.25 out so that I'll get k/x^2 in order for me to be able to substitute y into the equation. Also if you don't understand how I got 1/2.25, it's because I took the 2.25 out of the denominator. You can check by taking 1/2.25 times k/x^2.
These kinds of questions you need to first make the equation look like the original equation, then you use your original equation inside by substituting , and then you can get your answer.