In the coordinate plane, quadrilateral ๐๐๐ ๐ has coordinates ๐(-4,2), ๐(0,5), ๐ (7,4), and ๐(3,1). Which of the following statements is true about quadrilateral ๐๐๐ ๐?ResponsesBecause the slope of ๐๐ยฏ is equal to the slope of ๐๐ ยฏ and the slope of ๐๐ ยฏ is equal to the slope of ๐๐ยฏ, ๐๐ยฏโฅ๐๐ ยฏ and ๐๐ ยฏโฅ๐๐ยฏ. Therefore, quadrilateral ๐๐๐ ๐ is a parallelogram.Answer A: Because the slope of line segment P Q is equal to the slope of line segment S R and the slope of line segment Q R is equal to the slope of line segment P S , line segment P Q is parallel to line segment S R and line segment Q R is parallel to line segment P S . Therefore, quadrilateral P Q R S is a parallelogram.ABecause the slope of ๐๐ยฏ is the opposite of the slope of ๐๐ ยฏ and the slope of ๐๐ ยฏ is the opposite of the slope of ๐๐ยฏ, ๐๐ยฏโฅ๐๐ ยฏ and ๐๐ ยฏโฅ๐๐ยฏ. Therefore, quadrilateral ๐๐๐ ๐ is a parallelogram.Answer B: Because the slope of line segment P Q is the opposite of the slope of line segment S R and the slope of line segment Q R is the opposite of the slope of line segment P S , line segment P Q is parallel to line segment S R and line segment Q R is parallel to line segment P S . Therefore, quadrilateral P Q R S is a parallelogram.BBecause the slope of ๐๐ ยฏ is not the opposite of the slope of ๐๐ยฏ, ๐๐ ยฏ is not perpendicular to ๐๐ยฏ. Therefore, quadrilateral ๐๐๐ ๐ is not a parallelogram.Answer C: Because the slope of line segment P R is not the opposite of the slope of line segment Q S , line segment P R is not perpendicular to line segment Q S . Therefore, quadrilateral P Q R S is not a parallelogram.CBecause the slope of ๐๐ ยฏ is not the opposite reciprocal of the slope of ๐๐ยฏ, ๐๐ ยฏ is not perpendicular to ๐๐ยฏ. Therefore, quadrilateral ๐๐๐ ๐ is not a parallelogram.
Question
In the coordinate plane, quadrilateral ๐๐๐ ๐ has coordinates ๐(-4,2), ๐(0,5), ๐ (7,4), and ๐(3,1). Which of the following statements is true about quadrilateral ๐๐๐ ๐?ResponsesBecause the slope of ๐๐ยฏ is equal to the slope of ๐๐ ยฏ and the slope of ๐๐ ยฏ is equal to the slope of ๐๐ยฏ, ๐๐ยฏโฅ๐๐ ยฏ and ๐๐ ยฏโฅ๐๐ยฏ. Therefore, quadrilateral ๐๐๐ ๐ is a parallelogram.Answer A: Because the slope of line segment P Q is equal to the slope of line segment S R and the slope of line segment Q R is equal to the slope of line segment P S , line segment P Q is parallel to line segment S R and line segment Q R is parallel to line segment P S . Therefore, quadrilateral P Q R S is a parallelogram.ABecause the slope of ๐๐ยฏ is the opposite of the slope of ๐๐ ยฏ and the slope of ๐๐ ยฏ is the opposite of the slope of ๐๐ยฏ, ๐๐ยฏโฅ๐๐ ยฏ and ๐๐ ยฏโฅ๐๐ยฏ. Therefore, quadrilateral ๐๐๐ ๐ is a parallelogram.Answer B: Because the slope of line segment P Q is the opposite of the slope of line segment S R and the slope of line segment Q R is the opposite of the slope of line segment P S , line segment P Q is parallel to line segment S R and line segment Q R is parallel to line segment P S . Therefore, quadrilateral P Q R S is a parallelogram.BBecause the slope of ๐๐ ยฏ is not the opposite of the slope of ๐๐ยฏ, ๐๐ ยฏ is not perpendicular to ๐๐ยฏ. Therefore, quadrilateral ๐๐๐ ๐ is not a parallelogram.Answer C: Because the slope of line segment P R is not the opposite of the slope of line segment Q S , line segment P R is not perpendicular to line segment Q S . Therefore, quadrilateral P Q R S is not a parallelogram.CBecause the slope of ๐๐ ยฏ is not the opposite reciprocal of the slope of ๐๐ยฏ, ๐๐ ยฏ is not perpendicular to ๐๐ยฏ. Therefore, quadrilateral ๐๐๐ ๐ is not a parallelogram.
Solution
Para determinar cuรกl de las afirmaciones es verdadera sobre el cuadrilรกtero PQRS, primero debemos calcular las pendientes de los segmentos de lรญnea PQ, SR, QR y PS.
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Pendiente de PQ:
- Coordenadas de P: (-4, 2)
- Coordenadas de Q: (0, 5)
- Fรณrmula de la pendiente:
- Pendiente de PQ:
-
Pendiente de SR:
- Coordenadas de S: (3, 1)
- Coordenadas de R: (7, 4)
- Pendiente de SR:
-
Pendiente de QR:
- Coordenadas de Q: (0, 5)
- Coordenadas de R: (7, 4)
- Pendiente de QR:
-
Pendiente de PS:
- Coordenadas de P: (-4, 2)
- Coordenadas de S: (3, 1)
- Pendiente de PS:
Ahora, comparamos las pendientes:
- La pendiente de PQ () es igual a la pendiente de SR ().
- La pendiente de QR () es igual a la pendiente de PS ().
Dado que las pendientes de PQ y SR son iguales, y las pendientes de QR y PS son iguales, podemos concluir que:
Respuesta A: Porque la pendiente de PQ es igual a la pendiente de SR y la pendiente de QR es igual a la pendiente de PS, PQ es paralelo a SR y QR es paralelo a PS. Por lo tanto, el cuadrilรกtero PQRS es un paralelogramo.
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