Função do 1º grau
Quiz
•
Mathematics
•
9th - 10th Grade
•
Hard
Rivaildo Silva
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Uma barra de ferro com temperatura inicial de -10°C foi aquecida até 30°C. O gráfico anterior representa a variação da temperatura da barra em função do tempo gasto nessa experiência. A lei da função expressa no gráfico, é
y = 8x - 10
y = 5x + 30
y = 6x - 10
y = 30 - 5x
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A lei da função definida no gráfico, é
y = x + 3
y = - 2x + 3
y = - x + 3
y = - 2x - 3
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dado f(x) = - 5 - x, o valor de f( -3) é igual a
0
-2
3
-7
-8
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Uma padaria vende o kg do pão a R$ 14,00. João, toda manhã, compra pães nessa padaria e sempre paga no cartão de crédito. Sabendo que a padaria cobra uma taxa fixa de R$ 2,00 para compras no cartão de crédito, ache:a) a função de primeiro grau que descreve o valor a ser pago por João.
f(x) = - 14x
f(x) = 14x
y = 2 + 14x
y = 2x + 14
f(x) = 2x + 14
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
De acordo com a seguinte função:
f(x) = 2x - 6.
Qual afirmação é a correta?
6.
MULTIPLE SELECT QUESTION
1 min • 1 pt
é uma função do 1º grau, indique as alternativas verdadeiras
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Qual destes gráficos representa uma função constante?
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