Rachel's answer to LockB's Secondary 3 A Maths Singapore question.
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Hope this helps! :)
Date Posted:
4 years ago
how do u get frm 1 and -5 to -1 and 1/5 as the gradient tho
that’s because gradients of two perpendicular bisectors multiplied together gives you -1
g1 * g2 = -1
so if one of the gradient is -5,
-5 * g2 = -1
g2 = 1/5
g1 * g2 = -1
so if one of the gradient is -5,
-5 * g2 = -1
g2 = 1/5
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