Answer:
1, -1, -3, 3
Step-by-step explanation:
f(x) = 2x-1
f(1)=2*1-1 = 2-1 = 1
f(0) = 2*0 - 1 = -1
f(-1) = 2* -1 -1 = -2-1 = -3
f(2) = 2 * 2 -1 = 4-1 =3
