find what y is when x is 0

Question 1

when x=-2 at the beginning and y=-4 (x goes up by 1 and y goes up by 2) what would be y when x is 0?

Answer 1

-6

Question 2

when x=4 at the beginning and y=6 (x goes up by 1 and y goes up by 2) what would be y when x is 0?

Answer 2

-2