Question

What is the exact distance from (−1, 4) to (6, −2)?

Answer 1

D = √(x2 - x1)^2 + (y2 - y1)^2) = 
= √(6 + 1)^2 + (-2 - 4)^2)  =
= √ (7^2 + 6^2) = 
= √(49 + 36)  =
= √85