Question

f(x)=7X-1, para x=(-2,-1,0,1,2)


f(x)=-5X, para x=(-3,-2,-1,0,1)

Answer 1

Fica assim:

f(x) = 7x-1.

f(-2) = 7*-2-1
f(-2) = -14-1
f(-2) = - 15

f(-1) = 7*-1-1
f(-1) = -7-1
f(-1) = -8

f(0) = 7*0-1
f(0) = 0-1
f(0) = -1

f(1) = 7*1-1
f(1) = 7-1
f(1) = 6

f(2) = 7*2-1
f(2) = 14-1
f(2) = 13

f(x) = -5x

f(-3) = -5*-3
f(-3) = 15

f(-2) = -5*-2
f(-2) = 10

f(-1) = -5*-1
f(-1) = 5

f(0) = -5*0
f(0) = 0

f(1) = -5*1
f(1) = -5

Qualquer erro é só comentar.

Abraço :)