What is the distance between the points (-1, 5) and (3, -1)?
1 Answer
Mar 15, 2018
#sqrt(52) #
Explanation:
By Pythagoras, the distance,
# d^2 = (x_1-x_2)^2 + (y_1-y_2)^2 #
Thus the distance we seek between
# d^2 = (-1-3)^2 + (5-(-1))^2 #
# \ \ \ = (-4)^2 + (6)^2 #
# \ \ \ = 16+36 #
# \ \ \ = 52 #
Giving us:
# d = sqrt(52) #