if y is a function of x in the equation y=2x-7, which statment is true?

Question

Algebra word problem

Answer 1

Assuming x is an integer, the statements could be:

1. y is an even number
2. y is an odd number
3. y is a prime number
4. y is a positive number
5. y is a negative number
6. y is not a prime number

The only statement that is always true is 2. 

Statement 1 is never true. Statements 3, 4, 5 and 6 are sometimes true.

If x can be any number then none of the statements are always true.