Question

I forgot how to do these :') please help

Answer 1

-2-7 = -2 + (-7) = -9

-1-4 = -1 + (-4) = -5

0 -1 = -1

1 -2 = 1 + (-2) = -1

2-5 = 2 + (-5) = -3

Answer 2

fr, domain is all of the x values lol