Answer: y=-2
Step-by-step explanation: y=-2 is a horizontal line containing the points (2,-2) and (0,-2).
QUESTION A
The given points are
and 
The slope can be found using the formula;

We substitute the point to obtain;

This simplifies to

Therefore the slope is 5.
QUESTION 2
A positive slope indicates a rising line
A negative slope indicates a rising line
A zero slope means the line is horizontal.
An undefined slope means the line is vertical.
The correct answer is
A. The line rises from left to right.
2n + 20 = -2
20 + 2 = -2n
22 = -2n
22/2 = n
11 = n