The coordinate of a point A pn y axis is 5 and B has coordinate (-3,1).Find the length ofAB

The coordinate of a point A pn y axis is 5 and B has coordinate (-3,1)

1.	The coordinate of a point A pn y axis is 5 and B has coordinate (-3,1).Find the length ofAB
Answer» A is on y axis and it\'s ordinate is 5So coordinates of A is (0,5)and coordinates of B is (-3,1)Length of AB can be found out by using the distance formula= √【(x1 -x2)^2 + (y1 -y2)^2】= √【(-3-0)^2 + (1-5)^2】=√【9 + 16】=√25=5So length of AB is 5 units.