Question

Considere a função f(x) = -2x + 1. Determine os valores de f(0), f(2), f(-1) e f(5)

Answer 1

f(x)=-2x+1

f(0)
0=-2x+1
2x=1
x=1/2
x=0,5

f(2)
2=-2x+1
2x=1-2
2x=-1
x=-1/2
x=-0,5

f(-1)
-1=-2x+1
2x=1+1
2x=2
x=2/2
x=1

f(5)
5=-2x+1
2x=1-5
2x=-4
x=-4/2
x=-2

Espero ter ajudado, beijos!