Question

Anybody know how I can find the answer

Answer 1

The answer is C.
Equation is y2-y1/ x2 - x1

Answer 2

Given two points (x₁,y₁) and (x₂,y₂) the slope of the line passes through theses points will be:
m=(y₂-y₁)/(x₂-x₁)
We know two points (-5,-1) and (5,11), and the slope will be:
m=(11-(-1)) / (5-(-5))=(11+1)/(5+5)=12/10=6/5

Answer: C.   6/5