Problemas
14. Convert the following general form function to vertex form. You must show your work in order to receive credit. f(x)=(8x+30)/(x+3) Did you answer this question on your test paper?
Roztwór
Susana
élite · Tutor durante 8 años
4.1
(268 Votos)
Respuesta
To convert the given function \( f(x) = \frac{8x + 30}{x + 3} \) to vertex form, we need to follow these steps:1. **Rewrite the function in a more convenient form:** The given function can be rewritten as:
This simplifies to:
Since \(\frac{8(x + 3)}{x + 3} = 8\), we get:
2. **Express the function in terms of a new variable:** Let
. Then,
and the function becomes:
3. **Convert to vertex form:** The vertex form of a function is typically written as \( y = a(x - h)^2 + k \). However, since our function is not a quadratic but rather a rational function, we can rewrite it in a form that resembles the vertex form by completing the square for the denominator. We start with:
To express this in a form similar to \( y = a(x - h)^2 + k \), we recognize that the term
can be rewritten using a hyperbola form:
This does not directly convert to the vertex form \( y = a(x - h)^2 + k \) because it is not a quadratic function. Instead, it is a rational function. Therefore, the original function \( f(x) = \frac{8x + 30}{x + 3} \) does not have a straightforward vertex form representation.In conclusion, the function \( f(x) = \frac{8x + 30}{x + 3} \) cannot be easily converted to the vertex form \( y = a(x - h)^2 + k \) due to its nature as a rational function.