A line segment has end points at (-3, -5) and (4, 1). What is its length?

Answer 1

The formula for finding the length of a line segment is L = Sq Root [(X2 - X1)^2 + (Y2 - Y1)^2].

Let X2 = -3, X1 = 4, Y2 = -5, Y1 = 1.

L = Sq root [ (-3 - 4)^2 + (-5 -1)^2

L = Sq root (-7)^2 + (-6)^2

L= Sq root (49 + 36) = 9.2

This is just the Pythagorean theorem.