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Authored by GESSICA SOARES
Mathematics
9th - 11th Grade
Used 3+ times

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66 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Qual destes gráficos representa uma função constante?
2.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
O ponto de interseção do gráfico de f(x) = 2x -1 com o eixo das ordenadas (eixo y) é:
(0, -1)
(-1, 0)
(0,5 ; 0)
(0; 0,5)
3.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Qual dessas funções, é uma função crescente?
y = 2
y = -2x + 5
y = -x - 1
y = 4x - 10
4.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
A raiz da função afim é o valor que torna a função nula, ou seja, f(x)=0.
Verdadeiro
Falso
5.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Podemos afirmar que a função que gerou o gráfico acima é:
função crescente
função decrescente
função constante
função linear
6.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Uma locadora de carros faz o seguinte contrato com seus clientes: O aluguel de um carro popular custa 30 reais por dia mais R$ 0,15 por km rodado. Determine a lei da função que expressa o valor a ser pago por um cliente:
y = 30x
y = 0,15x
y = 30x + 0,15
y = 0,15x + 30
7.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Quando Δ < 0, analisando o gráfico de uma função quadrática podemos concluir que:
a parábola terá dois pontos de intersecção com o eixo x.
a parábola tangenciará o eixo x.
a parábola não terá pontos de intersecção com o eixo x.
não existirá gráfico para esta função.
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