
Avaliação de Compreensão: Função Afim
Authored by Cassius Oliveira
Information Technology (IT)
University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Uma função f:R→R é considerada afim se puder ser escrita na forma f(x)=ax+b, onde a e b são números reais. Qual das seguintes funções NÃO representa uma função afim?
C) f(x)=x2+1
A) f(x)=2x+3
B) f(x)=-x+5
D) f(x)=0,5x-7
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Na função afim f(x)=–4x+5, os coeficientes a e b são, respectivamente:
B) -4 e 5
A) 4 e -5
C) 5 e -4
D) -5 e 4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O gráfico de uma função afim é sempre uma:
C) Reta
A) Parábola
B) Circunferência
D) Elipse
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Considere a função afim f(x)=2x–6. A raiz ou zero dessa função é o valor de x para o qual f(x)=0. Qual é a raiz dessa função?
A) x=0
B) x=3
C) x=6
D) x=-3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Uma função afim f(x)=ax+b é crescente se:
A) a>0
B) a<0
C) a=0
D) a≤0
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o valor de f(2) para a função afim f(x)=3x–1?
A) 5
B) 4
C) 7
D) 3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O ponto onde o gráfico da função afim f(x)=ax+b intercepta o eixo y é dado pelo valor do coeficiente:
B) b
A) a
C) x
D) f
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