Sistema de ecuaciones: Método gráfico
Quiz
•
Mathematics
•
9th Grade
•
Hard
Karina Pintos
Used 11+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
El par (-2, 3) es una solución del sistema de ecuaciones:
4x + 5y = 7
x + 4y = 10
Verdadero
Falso
Answer explanation
Verdadero porque:
4(-2) + 5.3 = 7
-2 + 4.3 = 10
2.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
El par (4, 6) es una solución del sistema de ecuaciones:
x + 2y = 16
3x - y = 2
Verdadero
Falso
Answer explanation
Falso porque si sustituimos en la segunda ecuación no se cumple la igualdad ya que 3.4 - 6 = 6
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La solución del sistema formado por las ecuaciones
x + 3y = 4
5x +2y = -6
es...
(1, 1)
(0, -3)
(-2, 2)
Answer explanation
La solución tiene que verificar ambas ecuaciones.
4.
FILL IN THE BLANK QUESTION
1 min • 2 pts
Dada la ecuación 2x + y = 3
Si la x = 1 entonces el valor de la y para que se verifique la igualdad es ...
Answer explanation
Sustituimos el valor de x en la ecuación:
2.1 + y = 3
Despejamos y
y = 1
5.
FILL IN THE BLANK QUESTION
1 min • 2 pts
Dada la ecuación 2x + y = 3
Si la y = 3 entonces el valor de la x para que se verifique la igualdad es ...
Answer explanation
Sustituimos el valor de x en la ecuación:
2x + 3 = 3
Despejamos x
x = 0
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En la imagen puedes observar la representación gráfica de un sistema de dos ecuaciones lineales: ¿Cuántas soluciones tiene?
Ninguna
1
2
Infinitas
Answer explanation
Puedes observar que las rectas se cortan en un único punto.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es la solución del sistema anterior?
S = { (4, 4) }
S = { (3, 1) }
S = { (1, 3) }
S = { (4, 2) }
Answer explanation
Recuerda que las coordenadas se escriben en forma ordenada (x, y)
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