Let the other point be (x,y)
Now, mid-point of (x,y) &(0,5) will be
[{(x+0)/2},{(y+5)/2}]
Given
{(x+0)/2} = 0
thus, x = 0
Also,
{(y+5)/2} = -3
or, y + 5 = -6
or, y = -11
Hence the required point (x,y) is (0,-11)
Math
Let the other point be (x,y)
Now, mid-point of (x,y) &(0,5) will be
[{(x+0)/2},{(y+5)/2}]
Given
{(x+0)/2} = 0
thus, x = 0
Also,
{(y+5)/2} = -3
or, y + 5 = -6
or, y = -11
Hence the required point (x,y) is (0,-11)