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question find the coordinates of the vertex of the following parabola a…

Question

question
find the coordinates of the vertex of the following parabola algebraically. write your answer as
an (x,y) point.

y = x² + 8x + 19

Explanation:

Step1: Usar fórmula para x del vértice

Para una parábola en la forma \( y = ax^2 + bx + c \), la coordenada \( x \) del vértice se calcula con \( x = -\frac{b}{2a} \). Aquí, \( a = 1 \), \( b = 8 \), así que \( x = -\frac{8}{2(1)} = -4 \).

Step2: Calcular y sustituyendo x

Sustituir \( x = -4 \) en la ecuación \( y = x^2 + 8x + 19 \): \( y = (-4)^2 + 8(-4) + 19 = 16 - 32 + 19 = 3 \).

Answer:

\((-4, 3)\)