
equação da circunferência
Authored by Bruno Candido
Mathematics
KG
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24 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Dada a equação x² + y² + 6x – 2y + 1= 0, podemos afirmar que seu raio é igual a:
1
2
3
4
5
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A equação geral da circunferência que possui raio 1 e centro C( -2,0) é?
(x + 2)² + y² = 1
(x – 2)² + y² = 1
x² – 2x + y² + 3 = 0
x² + 2x + y² + 3 = 0
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A equação
(x – 7)² + (y + 2)² = 81
Representa uma circunferência de
Centro C(-7, -2) e raio = 81
Centro C(7, -2) e raio = 9
Centro C(-7, 2) e raio = 9
Centro C(7 , 2) e raio = 81
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Dada a equação reduzida da circunferência
(x - a)² + (y - b)² = r²
sendo (a, b) as coordenadas do centro e r a medida do raio, identifique a equação geral da circunferência de centro (2 , 3) e raio igual a 5.
x² + y² = 25
x² + y² – 4xy – 12 = 0
x² – 4x = -16
x² + y² – 4x – 6y – 12 = 0
y² – 6y = -9
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Qual é a equação reduzida da circunferência de centro (-1; 2) e raio 3.
(x−1)2+(y+2)2=3
(x−1)2+(y−2)2=9
(x+1)2+(y+2)2=3
(x+1)2+(y-2)2=9
6.
MULTIPLE SELECT QUESTION
5 mins • 1 pt
Qual a equação reduzida da circunferência
(x-3) ² + (y-2) ² = 4
(x-2) ² + (y-3) ² = 2
(x-9) ² + (y-4) ² = 5
(x-9) ² + (y-4) ² = √2
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Num plano cartesiano, a circunferência(x + 2)² + (y + 2)² = 2
está toda contida no segundo quadrante.
está toda contida no terceiro quadrante
contém um ponto do eixo Ox
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