Answer:Length of the line segment =23
Explanation:
Given points: (11,-4) and (-12,-4)
Distance between two points is given by the distance formula
i.e. D=√

x1=11, y1=-4
x2=-12, y2=-4
Length of the given segment=√((-12-11)²+(-4-(-4))²)
D=-√((-23)²+0²)
D=√529
D=±23
D=23 [Since D can't be negative]