Question

Calcule f (2) , f(-4) , f (0) ... A) 2-4 x .... B) 7/3 x

Answer 1

A)
f(2)=2-4(2)
f(2)=2-8
f(2)=-6

f(-4)=2-4(-4)
f(-4)=2+16
f(-4)=18

f(0)=2-4(0)
f(0)=2-0
f(0)=2
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B)
f(2)=(7/3)*2
f(2)=14/3

f(-4)=(7/3)*(-4)
f(-4)=-28/3

f(0)=(7/3)*0
f(0)=0

Answer 2

Boa noite Bruno

a)

f(x) = 2 - 4x

f(2) = 2 - 4*2 = 2 - 8 = -6
f(-4) = 2 - 4*(-4) = 2 + 16 = 18
f(0) = 2 - 4*0 = 2

b)

f(x) = 7x/3

f(2) = 7*2/3 = 14/3
f(-4) = 7*(-4)/3 = -28/3
f(0) = 7*0/3 = 0

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