B What is the value of x?
2 units
10
X 3 units
A X D
5 units
4x
с
8 units

the answer is (4,3)

since the rule for r0, 90º is (-y,x) and it was already applied to form the image, all you have to do is reverse the answer using this formula.

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

this is a tricky question, lol,   but i think the answer is 100,000.