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Graph the following nonlinear system of equations and identify the two solutions.𝑦=𝑥2+6𝑥−4𝑦=−𝑥+4Group of answer choices(1,−3) and (8,−12)(−1,3) and (−8,12)(1,3) and (−8,12)(1,3) and

Question

Graph the following nonlinear system of equations and identify the two solutions.𝑦=𝑥2+6𝑥−4𝑦=−𝑥+4Group of answer choices(1,−3) and (8,−12)(−1,3) and (−8,12)(1,3) and (−8,12)(1,3) and

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Solution

Para resolver el sistema de ecuaciones no lineales dado:

y=x2+6x4 y = x^2 + 6x - 4 y=x+4 y = -x + 4

seguiremos los siguientes pasos:

  1. Igualar las ecuaciones: Como ambas ecuaciones son iguales a y y , podemos igualarlas entre sí: x2+6x4=x+4 x^2 + 6x - 4 = -x + 4

  2. Reorganizar la ecuación: Pasamos todos los términos al mismo lado de la ecuación para igualar a cero: x2+6x4+x4=0 x^2 + 6x - 4 + x - 4 = 0 x2+7x8=0 x^2 + 7x - 8 = 0

  3. Resolver la ecuación cuadrática: Utilizamos la fórmula general para resolver la ecuación cuadrática ax2+bx+c=0 ax^2 + bx + c = 0 : x=b±b24ac2a x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} En este caso, a=1 a = 1 , b=7 b = 7 , y c=8 c = -8 : x=7±724(1)(8)2(1) x = \frac{-7 \pm \sqrt{7^2 - 4(1)(-8)}}{2(1)} x=7±49+322 x = \frac{-7 \pm \sqrt{49 + 32}}{2} x=7±812 x = \frac{-7 \pm \sqrt{81}}{2} x=7±92 x = \frac{-7 \pm 9}{2}

Esto nos da dos soluciones para x x : x=7+92=1 x = \frac{-7 + 9}{2} = 1 x=792=8 x = \frac{-7 - 9}{2} = -8

  1. Encontrar los valores correspondientes de y y : Sustituimos los valores de x x en una de las ecuaciones originales (usaremos y=x+4 y = -x + 4 ):

Para x=1 x = 1 : y=1+4=3 y = -1 + 4 = 3

Para x=8 x = -8 : y=(8)+4=8+4=12 y = -(-8) + 4 = 8 + 4 = 12

  1. Identificar las soluciones: Las soluciones del sistema de ecuaciones son los pares ordenados (x,y)(x, y): (1,3) (1, 3) (8,12) (-8, 12)

Por lo tanto, las soluciones son (1,3)(1, 3) y (8,12)(-8, 12). La opción correcta es:

(1,3) (1, 3) y (8,12) (-8, 12)

This problem has been solved

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