Question

If A= (7,9) and B= (3,12) what is the length of AB?

Answer 1

The length can be found using the Pythagorean Theorem...

c^2=a^2+b^2 and in this case:

d^2=(dx^2)+(dy^2)

d^2=(3-7)^2+(12-9)^2

d^2=-4^2+3^2

d^2=16+9

d^2=25

d=5 

So the length of AB=5 units.

Answer 2

Answer:

5 units

Step-by-step explanation: