elect the correct answer.Which graph is the graph of the function 𝑟(𝑥)=𝑥2+6𝑥+82𝑥+8 ?
Question
elect the correct answer.Which graph is the graph of the function 𝑟(𝑥)=𝑥2+6𝑥+82𝑥+8 ?
Solution 1
To determine which graph corresponds to the function , we need to analyze the function step by step.
Step 1: Simplify the Function
First, let's simplify the function if possible.
Factor the numerator:
So the function becomes:
Step 2: Cancel Common Factors
We can cancel the common factor in the numerator and the denominator, but we must note that because it would make the denominator zero.
Step 3: Identify the Simplified Function
The simplified function is:
This is a linear function with a slope of and a y-intercept of 1.
Step 4: Consider the Domain
The function is defined for all except . At , there is a vertical asymptote or a hole in the graph.
Step 5: Sketch the Graph
- Linear Part: The graph of is a straight line with a slope of and a y-intercept of 1.
- Discontinuity: There is a hole at .
Step 6: Match with Given Graphs
To match the function with the correct graph, look for a graph that:
- Is a straight line with a slope of .
- Has a y-intercept at .
- Has a hole at .
Conclusion
The correct graph will be a straight line with the specified slope and y-intercept, and it will have a hole at .
Without the actual graphs to compare, this is the detailed process to identify the correct graph. If you have multiple-choice options, look for the graph that fits these criteria.
Solution 2
Para determinar cuál es el gráfico de la función , sigamos estos pasos:
-
Simplificación de la función: Primero, simplifiquemos la expresión si es posible.
Factoricemos el numerador:
Entonces, la función se convierte en:
Simplificamos cancelando el término común :
Así que la función simplificada es:
-
Identificación del tipo de función: La función simplificada es una función lineal.
-
Características del gráfico:
- La pendiente de la recta es .
- El intercepto en el eje es .
-
Dibujar el gráfico:
- La recta pasa por el punto en el eje .
- Con una pendiente de , por cada 2 unidades que avanzamos en , subimos 1 unidad en .
-
Considerar el dominio:
- La función original tiene una restricción en porque el denominador se hace cero, lo que significa que hay una asíntota vertical en .
-
Conclusión: El gráfico de la función es una línea recta con una pendiente de y un intercepto en de , excepto en donde hay una asíntota vertical.
Para identificar el gráfico correcto, busca una línea recta con estas características y una discontinuidad en .
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