Goh Yun Jing's answer to Izzah's Secondary 4 A Maths question.

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Goh Yun Jing
Goh Yun Jing's answer
8 answers (Tutor Details)
1st
First, it doesnt make sense for the line to have a gradient of -1. It should have a positive gradient.
Recall the formula m1= -1/m2