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secondary 4 | E Maths
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Danielle
Danielle

secondary 4 chevron_right E Maths chevron_right Singapore

pls need help w this q!!

Date Posted: 5 years ago
Views: 231

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Julia
Julia's answer
18 answers (A Helpful Person)
1st
Hope this helps!






Sorry if the answer is wrong :P
Danielle
Danielle
5 years ago
thank u so much !! But can u explain why you put “y= k/2.25 times 1/x^2 ??
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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.