Question

Dada a funçao: f(x)5x+6

Determine

a)f(-2)

b)f(0)

c)f(3)

d) x para f(x)=0

e) x para f(x)=5

Answer 1

Olá!!!

Resolução!!!

f ( x ) = 5x + 6

al

• f ( - 2 )

f ( x ) = 5x + 6
f ( - 2 ) = 5 • ( - 2 ) + 6
f ( - 2 ) = - 10 + 6
f ( - 2 ) = - 4

b)

• f ( 0 )

f ( x ) = 5x + 6
f ( 0 ) = 5 • ( 0 ) + 6
f ( 0 ) = 0 + 6
f ( 0 ) = 6

c)

• f ( 3 )

f ( x ) = 5x + 6
f ( 3 ) = 5 • ( 3 ) + 6
f ( 3 ) = 15 + 6
f ( 3 ) = 21

d)

• f ( x ) = 0

f ( x ) = 5x + 6
0 = 5x + 6
5x + 6 = 0
5x = - 6
x = - 6/5

e)

• f ( x ) = 5

f ( x ) = 5x + 6
5 = 5x + 6
5x + 6 = 5
5x = 5 - 6
5x = - 1
x = - 1/5

Espero ter ajudado!!!

Answer 2

F(x)= 5x + 6                        

a) f(-2)= 5.(-2) + 6
    f(-2)= -10 + 6 
    f(-2)= -4 

b) f(0)= 5.0 + 6
    f(0)= 0 + 6
    f(0)= 6

c) f(3)= 5.3 + 6
    f(3)= 15 + 6
    f(3)= 21


 :)