Question

Dada a função afim f(x)=-3x+5,determine:
A) f(1)
B) f(0)=
C) f(1/3)=
D) f(-1/2)=

Answer 1

A)
$f(1) = - 3 \times 1 + 5 = - 3 + 5 =2$

B)
$f(0) = - 3 \times 0 + 5 = 0 + 5 = 5$

C)
$f( \frac{1}{3}) = - 3 \times \frac{1}{3} + 5 = - 1 + 5 = 4$

D)

$f( - \frac{1}{2} ) = - 3 \times \frac{-1}{2} + 5 = \frac{3}{2} + \frac{10}{2} = \\ = \frac{ 3 + 10}{2} = \frac{13}{2}$

Answer 2

f(x) = - 3x + 5

f(1) = - 3.1 + 5
f(1) = 2

f(0) = - 3.0 + 5
f(0) = 5

f(1/3) = - 3.1/3 + 5
f(1/3) = 4

f(- 1/2) = - 3(- 1/2) + 5
f(- 1/2) = 13/2