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Writing an Equation in Vertex Form

The parent function is [tex]\( f(x) = x^2 \)[/tex].

The vertex form of the function is [tex]\( g(x) = (x - h)^2 + k \)[/tex].

What are the values of [tex]\( h \)[/tex] and [tex]\( k \)[/tex]?

[tex]\( g(x) = (x - 9)^2 + \square \)[/tex]

Fill in the blank.


Sagot :

Let’s analyze the given function [tex]\( g(x) = (x-9)^2 + \)[/tex].

### Step-by-Step Solution:

1. Understanding the Vertex Form:
The vertex form of a quadratic function is given by:
[tex]\[ g(x) = a(x-h)^2 + k \][/tex]
Here, [tex]\((h, k)\)[/tex] represents the vertex of the parabola.

2. Identifying Components of the Function:
Observing the given function [tex]\( g(x) = (x-9)^2 \)[/tex], we can directly compare it with the vertex form [tex]\( g(x) = a(x-h)^2 + k \)[/tex].

- The term inside the parenthesis with [tex]\( x \)[/tex] (i.e., [tex]\((x - 9)\)[/tex]) provides the value of [tex]\( h \)[/tex]:
[tex]\[ h = 9 \][/tex]

- The constant term added outside the square term represents [tex]\( k \)[/tex]. Since no constant term is explicitly provided in the equation [tex]\( (x-9)^2 \)[/tex], we can infer that:
[tex]\[ k = 0 \][/tex]

3. Vertex of the Function:
From the values identified, the vertex of the function [tex]\( g(x) = (x-9)^2 \)[/tex] is:
[tex]\[ (h, k) = (9, 0) \][/tex]

### Conclusion
The values of [tex]\( h \)[/tex] and [tex]\( k \)[/tex] are [tex]\( h = 9 \)[/tex] and [tex]\( k = 0 \)[/tex], respectively. Thus, the equation in vertex form is:
[tex]\[ g(x) = (x-9)^2 + 0 \][/tex]