What is the length of side BC? Round your answer to the nearest tenth.

Answer:
2 units
Step-by-step explanation:
B = (3,1)
C = (1,1). ________________
Length of a line = √{( x2 - x1)² + (y2 - y1)²}
x1 = 1
x2 = 3
y2 = 1
x2 = 1
Substituting... __________
Length of BC = √{(3-1)² + (1-1)²}
= √(2)²
= 2 units