
Equações do Segundo Grau e Gráficos
Authored by GIOVANE CONRADO
Mathematics
9th Grade
Used 3+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Considere a equação x=x^2 - 5x + 6 = 0. Quais são as raízes dessa equação?
x=x = 1 e x = 5
x = 2 e x = 3
x = -2 e x = -3
x = 6 e x= -1
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Qual é o formato do gráfico de uma equação do segundo grau y = ax^2 + bx + c?
Reta
Circunferência
Parábola
Elipse
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Se a >0 na equação y = ax^2 + bx + c, a concavidade da parábola é:
Voltada para cima
Voltada para baixo
Voltada para a direita
Voltada para a esquerda
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Qual é o valor do discriminante da equação x^2 + 4x + 5 = 0?
x="16"
x="-4"
x="4"
x="-16"
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Se o discriminante de uma equação do segundo grau é negativo, então:
Existem duas raízes reais e distintas
Existem duas raízes reais e iguais
Não existem raízes reais, apenas complexas
Não existe solução
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Qual é o vértice da parábola y = x^2 - 6x + 8?
x="(3, -1)"
x="(2, 4)"
x="(1, 1)"
x="(6, 8)"
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A equação 2x^2 - 8x + 6 = 0 representa uma parábola. Qual é a concavidade dessa parábola?
Para cima
Para baixo
Para a direita
Para a esquerda
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