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secondary 3 | E Maths
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putri
Putri

secondary 3 chevron_right E Maths chevron_right Singapore

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Date Posted: 4 years ago
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Heng Hong Hwee
Heng Hong Hwee's answer
15 answers (A Helpful Person)
1st
(a) use the formula y=mx + c where m is gradient and c is y intercept. to find gradient, its “rise over run” meaning difference in y coordinates over difference in x coordinates

(b) use of formula which is derived from pythagoras’ theorem where segment AB is the hypothenus

(c) line parallel to y axis and passes (12,0) is x=12. since it intersects with line AB produced, substitute x=12 into ur equation from (a)