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secondary 3 | E Maths
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Chelsia
Chelsia

secondary 3 chevron_right E Maths chevron_right Singapore

idk how to do

Date Posted: 4 years ago
Views: 199

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Adalynn
Adalynn's answer
11 answers (A Helpful Person)
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Hope this helpss
Chelsia
Chelsia
4 years ago
How to know coordinate c is (32,6)
Adalynn
Adalynn
4 years ago
The equation of line AC is
Y = (gradient)x + (y intercept)
Since gradient is 5/2, and y intercept is -10
The equation will be
Y = (5/2)x - 10

The coordinate of C is the intersection between equation line AC and the horizontal line DC

The horizontal DC equation is Y = 6

So to find coordinates of C, substitute y = 6 into the equation line AC

6 = (5/2)x - 10
(5/2)x = 16
X = 16 / (5/2) = 32/5

Coordinates of C: (32/5, 6)
Chelsia
Chelsia
4 years ago
okayss thanks alot