Question

Calculate the distance between the points K = −1, −4 and L = −82 in the coordinate plane. Give an exact answer (not a decimal approximation).

PLEASE HELP

Answer 1

K = (-1, -4), L = (-8, 2)

$kl \: = \: \sqrt{{( - 8 - ( - 1)) }^{2} \: + \: {(2 - ( - 4))}^{2} }$
KL = √85 ≈ 9.21954 units.