If A 4 5 and B 7 9 what is the length of AB 6 units 7 unit

If A = (4, -5) and B = (7, -9), what is the length of AB? 6 units 7 units 8 units 5 units

Solution

Solution:

Using distance formula distance between A(4,-5) and B(7,-9)

AB = (x2-x1)^2 +(y2-y1)^2

AB = (7-4)^2 +(-9-(-5))^2

AB = (3)^2+(4)^2

AB = 25

AB = 5 units

answer: D : 5 unit is correct option