Describe the function shown in the table.

x
y
3
–5
4
–3
5
–1
6
1
a.
as x increases by 1, y increases by 2.
b.
as x increases by 1, y decreases by 2.
c.
each x is multiplied by –2, and then 1 is added.
d.
one number less is subtracted from x each time.