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secondary 3 | A Maths
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serene
Serene

secondary 3 chevron_right A Maths chevron_right Singapore

pn 6

Date Posted: 3 years ago
Views: 232
Eric Nicholas K
Eric Nicholas K
3 years ago
Gradient of OA
= (5 - 0) / (1 - 0)
= 5

For OB to be perpendicular to OA, the product of their gradients must be -1.

So,

gradient of OB x 5 = -1
gradient of OB = -1/5

But gradient of OB
= (q - 0) / (p - 0)
= q/p

This means that q/p = -1, so that q = -p.

We can just pick any combination of numbers except for p = 0.

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Barry Tan
Barry Tan's answer
128 answers (Tutor Details)
1st
y = -5x
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Tham KY
Tham Ky's answer
6052 answers (Tutor Details)
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