Is x+5 able to have reversed order and if so what is the expression?

If this is what you mean, you can make x+5, 5+X and you get the same sum because the order in which the addends in an addition equation have no effect on the answer. For example, 2+3 is 5 and 3+2 is 5. 9+2 is 11, and 2+9 is 11.

the answer is d

the answer is in the first quadrant, which make the y-int positive.

since the dots are going down, therefore the correlation is negative

i hope it is right.