How can you tell whether a square root of a whole number is rational or irrational?

Can someone me with this problem . show your work .

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

For what type of equity loan are you lent a lump sum, which is to be paid within a certain period of time? a. a line of credit b. equity c. a second mortgage d. an amortization