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secondary 3 | A Maths
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Cason
Cason

secondary 3 chevron_right A Maths chevron_right Singapore

Please help!

Date Posted: 4 months ago
Views: 34

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Tan Yun Qiang
Tan Yun Qiang's answer
112 answers (Tutor Details)
1st
Bisector will give you the midpoint
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Eric Nicholas K
Eric Nicholas K's answer
3965 answers (Tutor Details)
For part i, note that "BD bisects AC at M" implies that AM = CM, or M is the midpoint of AC.

We use this fact AND the fact that BD is perpendicular to AC to help us find the equation of BD.

For part ii, the x-intercept can be found by setting y = 0.

For part iii, we use the fact that M is the midpoint of BD since ABCD is a parallelogram.