1.

If the origin is shifted to the point 0′(2, 3), the axes remaining parallel to the original axes, find the new co-ordinates of the points i. A(1, 3) ii. B(2,5)

Answer»

Origin is shifted to (2, 3) = (h, k) 

Let the new co-ordinates be (X, Y). 

x = X + handy = Y + k 

x = X + 2 and y = Y + 3 …(i) 

i. Given, A(x, y) = A( 1, 3) 

x = X + 2 andy = Y + 3 …[From(i)] 

∴ 1 = X + 2 and 3 = Y + 3 X = – 1 and Y = 0 

∴ The new co-ordinates of point A are (- 1,0).

ii. Given, B(x, y) = B(2, 5) 

x = X + 2 and y = Y + 3 …[From(i)] 

∴ 2 = X + 2 and 5 = Y + 3 

∴ X = 0 and Y = 2 

∴ The new co-ordinates of point B are (0, 2).



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