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secondary 3 | A Maths
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This is hard!! >.<
Date Posted: 4 years ago
Views: 266
2y - x = 7
2y = x + 7
y = 0.5x + 3.5
The gradient of the new line is also 0.5.
Bisects the line joining (3, 1) and (1, -5) means that this new line that we are finding cuts the midpoint of this other line. Midpoint of this other line is (2, -2) (average values of x and y)
So, y = 0.5x + c
-2 = 2 (0.5) + c
c = -3
So y = 0.5x - 3
2y = x - 6
2y = x + 7
y = 0.5x + 3.5
The gradient of the new line is also 0.5.
Bisects the line joining (3, 1) and (1, -5) means that this new line that we are finding cuts the midpoint of this other line. Midpoint of this other line is (2, -2) (average values of x and y)
So, y = 0.5x + c
-2 = 2 (0.5) + c
c = -3
So y = 0.5x - 3
2y = x - 6
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The coordinate geometry in A Maths is just a slightly more advanced version of the coordinate geometry in E Maths.
Date Posted:
4 years ago
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