Exercícios sobre função do 1º grau
Autor: Sonza | Publicado: 2013-10-24T12:42:00-07:00

Escola: E.M.E.F.Reny Collares
Série: 9º ano&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Turma: 91
Disciplina: Matemática&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Data: 25/10/13
Objetivo: Identificar e reconhecer uma função.
Site: amatematicasimples.blogspot.com.br/2011/09/exercicios-sobre-funcao-do-1-grau-9-ano-html


Queridos alunos vamos resolver os exercícios abaixo com função.

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<![endif]-->1)
Dados os conjuntos A = { 5,6,7,8,9,10} e o conjunto B = {
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h(x) = 3x – 3. Diante desses dados, encontre o conjunto Im (h).

2) Dados o conjunto C = {-1,0,2} e o D = {0,1,2,3,4} e a função g: C-&gt; D
definida pela lei de formação g(x) = x + 2. Diante desses dados, encontre o
conjunto Im (g).

3) Sejam A = { -1,1,3,5} e B = {0,1,2,3,4,5,6}. Para a função f: A-&gt; B,
definida por f(x) = x+1, determine:

a) Conjunto dos pares ordenados de f;
b) Diagrama de f;
c) Domínio de f;
d) Contradomínio de f;
e) Conjunto imagem de f.

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<![endif]--><!--[if gte mso 10]>

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<![endif]-->4)Dada a função do 1º grau f(x) = 1 – 5x, determine:

a) f(0)
b) f(-1)
c) f(8)
d) f(12)

5) Considere a função do 1º grau f(x) = - 3x + 2. Determine os valores de x
para que se tenha:

a) f(x) = 11
b) f(x) = 2
c) f(x) = - 7
d) f(x) = 1

6)Verifique se a equação f(x) = 2x+ 1, determina ou não uma função de A em B,
dados A = {1,3,5} e B = { 3,4,5}&nbsp;

<!--[if gte mso 9]>
 
  
  
 
<![endif]-->
<!--[if gte mso 9]>
 
  
  
 
<![endif]-->
<!--[if gte mso 9]>
 
  Normal
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  21
  
  
  false
  false
  false
  
  PT-BR
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  X-NONE
  
   
   
   
   
   
   
   
   
   
   
   
  
  
   
   
   
   
   
   
   
   
   
   
   
  
<![endif]-->7) Dada a função f(x) = ax + 2, determine o valor de a para que se tenha f(4) =
22.
10) Dada a função f(x) = ax + 2, determine o valor de a para que se tenha f(4) =
22.&nbsp;