Answer:
1 1/4
Step-by-step explanation:
5/8 ÷ 2
Copy dot flip
5/8 * 2/1
Rewriting
5/1 * 2/8
5 * 1/4
5/4
1 1/4
Yes, it is a rational number.
Well.. for the equation x= 3.5, let's take a look at its values

so.. notice.. no matter what "y" is, "x" will always be 3.5,
so is really just a horizontal line, thus, look at the picture below
A. IS THE ANSWER!
STEP-BY-STEP Explainaton