Question

the co-ordinate of point a on y axis is 5 and b has coordinates - 3, 1 find the length of a b

Answer 1

Let a point A(0,5) and a point B(-3,1)
AB=√[0-(-3)]2+[5-1]2
AB=√(0+3)2+(4)2
AB=√9+16
AB=√25
AB=5units-ans
That's it...