Question

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1)Dada a função y= -3x-5 Determine :
A) F(3)
B) F ( -8)
C) F(0)
D) F(-3)
E) F(5)

2) Dada a função y=4x+2 Determine

A) F(x)=8
B) F(x)=-4
C) F(x)=0
D) F(x)=5
E) F(x)= 2

Answer 1

Resposta:

1)

A) y=-14

B)y=19

C)y=-5

D)y=4

F)y=-20

2)

A)x=6/4

B) -6/4=x

C)-2/4=x

D) 3/4=x

E)0/4=x

Explicação passo-a-passo:

1) Função y= -3x-5

A) F(3)=x=3

y=-3(3)-5

-9-5

-14

B) F (-8)=x=-8

y=-3(-8)-5

y=24-5

y=19

C) F(0)=x=0

y=-3(0)-5

y=0-5

y=5

D) F(-3)=x=-3

y=-3(-3)-5

y=9-5

y=4

E) F(5)=x=5

y=-3(5)-5

y=-15-5

y=-20

2) função y=4x+2

A)F(x)=8

8=4x+2

8-2=4x

6=4x

6/4=x

B) F(x)=-4

-4=4x+2

-4-2=4x

-6=4x

-6/4=x

C) F(x)=0

0=4x+2

0-2=4x

-2=4x

-2/4=x

D) F(x)=5

5=4x+2

5-2=4x

3=4x

3/4=x

E) F(x)= 2

2=4x+2

2-2=4x

0/4=x