
Funções de Proporcionalidade Direta
Quiz
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
Alexandra Maria do Vale Vieira Couto
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6 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 3 pts
Qual dos gráficos seguintes representa uma função de proporcionalidade direta?
2.
MULTIPLE CHOICE QUESTION
3 mins • 3 pts
A constante de proporcionalidade é:
(A) 0,125
(B) 0,8
(C) 8
(D) 80
3.
MULTIPLE CHOICE QUESTION
3 mins • 3 pts
O valor de a presente na tabela é:
(A) 1
(B) 1,5
(C) 2
(D) 2,5
4.
MULTIPLE CHOICE QUESTION
3 mins • 3 pts
De uma função de proporcionalidade direta, f, sabe-se que o ponto de coordenadas (6 , 4) pertence ao seu gráfico. Qual das seguintes expressões algébricas define a função f?
(A) f(x)=2/3 x
(B) f(x)=3/2 x
(C) f(x)=2x
(D) f(x)=24x
5.
MULTIPLE CHOICE QUESTION
3 mins • 3 pts
Para comemorar o 10.º aniversário, uma loja colocou os seus artigos com um desconto de 70% sobre o preço de venda. A expressão algébrica da função que ao preço de venda, v, faz corresponder o preço com desconto, P(v), é:
(A) P(v)=0,7v
(B) P(v)=70v
(C) P(v)=30v
(D) P(v)=0,3v
6.
MULTIPLE CHOICE QUESTION
3 mins • 3 pts
Indica as expressões algébricas das funções f , g e h .
f(x)= 0.25 x
g(x) = 0,1 x
h(x) = 0,05 x
f(x)= 4 x
g(x) = 10 x
h(x) = 20 x
f(x)= - 0.25 x
g(x) = - 0,1 x
h(x) = - 0,05 x
f(x)= - 4 x
g(x) = - 10 x
h(x) = - 20 x
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