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secondary 3 | E Maths
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secondary 3 chevron_right E Maths chevron_right Singapore

I don't understand part a pls help,urgent

Date Posted: 3 years ago
Views: 156

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based on the graph, point Q states that when x = 0, y = 12

and (a) says QR is parallel to a line w eqn of y = -2x + 5. this means QR shares the same gradient of -2.

when x = 0,

12 = -2(0) + c
c = 12

hence the eqn of line QR is

y = -2x + 12
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Christmas MT
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