Question

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

Answer 1

Answer:

D

Step-by-step explanation:

Answer 2

Answer:

5 (Answer B)

Step-by-step explanation:

As we move from A to B, x increases by 3 and y decreases by 4.  Apply the Pythagorean Theorem:

(length of AB) = √(3² + [-4]²) = 5 (Answer B)