Jeannie Chua's answer to Insyirah Ash-Sharh's Junior College 1 H1 Maths question.
2nd pair of coordinates is wrong.
I have problem answering the next question. I keep getting the wrong answer. It should be 3 for z. But I get 3.8
You can look at my solution but I'm not sure if you've been taught to do it using matrix. If not I can show you using another method
We didn't use matrix method. We use substitution and elimination
I'm afraid that my lecturer can't accept matrix method since she's a little picky
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