PLEASE check my 3 true and false answers?

The polynomial 79xy is called a binomial.


i put true at first but then false...still kinda unsure, but false is what i decided to go with...





The polynomial x^2 - 7x + 5 has a degree of two.


i got true





The equation x^2 + 5y = 18 is called a linear equation.


i also got true for this one...





if i got any of them wrong please explain...


thanks!PLEASE check my 3 true and false answers?
1 is false, it is a monomial


2 is true


3 is false, it is quadratic