The answer is m^2/n so basically the second option.
The answer is all real numbers
domain is easy like that
Answer:

Step-by-step explanation:
start by squaring both sides:

squaring a square root cancels it out:

solve for x by first adding 8 to both sides:

then divide both sides by 3:

I think it’s C because inverses are basically the reciprocals of each other. These make 90 degree angles and the slopes product should be -1. C looks like the lines are perpendicular so I would go with that