
Função Afim
Authored by Gilberto Coelho Menezes
Mathematics
2nd Grade
Used 3+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
2
3
5
-3
Answer explanation
O coeficiente angular de uma função afim é o coeficiente que acompanha a variável x, neste caso, 3. Portanto, o coeficiente angular é 3.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
-4
1
4
0
Answer explanation
O coeficiente linear de uma função afim é o termo independente, que é 1 neste caso, portanto, a resposta correta é 1.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(0, -3)
(0, 3)
(-3, 0)
(3, 0)
Answer explanation
A função afim corta o eixo y quando x = 0. Substituindo x = 0 na equação y = 5x - 3, obtemos y = 5(0) - 3 = -3. Portanto, o ponto de interseção com o eixo y é (0, -3).
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(2, 0)
(-2, 0)
(0, 2)
(0, -2)
Answer explanation
O ponto de interseção com o eixo x ocorre quando y = 0. Substituindo y por 0 na equação y = -2x + 4, obtemos 0 = -2x + 4, resultando em x = 2. Portanto, o ponto de interseção é (2, 0).
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Observando o gráfico de uma função afim que passa pelos pontos (1, 3) e (3, 7), qual é o coeficiente angular?
2
4
1
3
Answer explanation
O coeficiente angular de uma função afim é dado pela variação da função sobre a variação do eixo x. Portanto, (7-3)/(3-1) = 4/2 = 2. Portanto, o coeficiente angular é 2.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
-5
5
0
Answer explanation
O coeficiente linear de uma função afim é o termo independente, que neste caso é -5, portanto a resposta correta é -5.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Qual é o coeficiente angular da função afim cujo gráfico passa pelos pontos (0, -1) e (2, 3)?
1
2
-1
3
Answer explanation
The coefficient angular is calculated by (y2-y1)/(x2-x1), which gives (3-(-1))/(2-0) = 2
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