Are these Correct??? Please help ...?

Question

- 2 x -1 + 3 = 5
- 2 x 0 + 3 = 3... or 0 cant choose
- 2 x 1 + 3 = 1
- 2 x 2 + 3 = -1
Help please Im not being lazy I just need to know if they are right ..im not very good at this crap ...ps the reason most of this stuff is almost the same is cause i am dong function tables.

Answer 1

all of them are right

good job :D

Answer 2

1) -2 x -1 + 3=5

2) -2 x 0 + 3= 3
(-2x 0) +3= 3
(0) +3= 3

3) -2 x 1+3 =1

4) -2 x2 +3 =-1