Question

AB is a diameter of a circle with centre at O(0,1). If coordinates of A are (0,4), then what are the coordinates of B?

Answer 1

Answer:

0 -2

Step-by-step explanation:Given,

A ( 0,4)

B (x,y)

O ( 0,1)

O is the midpoint of AB.

From section formula,

x-coordinates ,

0 = 0+x/2

x/2 = 0

x = 0

y-coordinates,

1 = 4+y/2

4 + y = 2

y = 2-4

= -2

So,

The coordinates of B are (0,-2)