Answer:
1. 4
Explanation:
(-3, 6) and (-3, 10)
|-3 - 3| = 0, |6 - 10| = 4
4² + 0² = 16,
= 4
(4, -5) and (-2, -5)
|4 - -2| = 6, |-5 - 5| = 0
6² + 0² = 36, √36 = 6
(6, 4) and (6, -1)
|6 - 6| = 0, |4 - -1| = 5
5² + 0² = 25, √25 = 5
(-9, 1) and (-4, 1)
|-9 - -4| = 5, |1 - 1| = 0
5² + 0² = 25, √25 = 5