
Funções - 9ºano
Authored by Sandra Bravo
Mathematics
9th Grade
Used 6+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
O gráfico da função y = - 4x + 2 é:
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Assinala as opções verdadeiras relativas a uma relação de proporcionalidade inversa:
Se uma grandeza aumenta, a outra diminui.
O produto entre as duas grandezas é constante.
O gráfico que representa a designação designa-se por hipérbole.
Para descobrir um valor para uma das grandezas, divide-se a constante pelo valor correspondente da outra constante.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
é uma função de proporcionalidade direta.
Verdadeiro
Falso
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
O gráfico representa uma função de proporcionalidade inversa, em que k = _______
5.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Se x e y são duas variáveis inversamente proporcionais, então a = ______
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
As variáveis x e y são inversamente proporcionais.
A constante de proporcionalidade e as coordenadas do ponto A são:
k = 3 ; A(4, 3)
k = 12 ; A (4,12)
k = 12 ; A (4, 3)
k = 12 ; A (3, 4)
7.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Dada a representação gráfica da função f, assinala as opções verdadeiras:
x e y são duas variáveis inversamente proporcionais.
A constante de proporcionalidade inversa é 12.
A expressão algébrica da função é
A expressão algébrica da função é
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