Questions: Determine the quadratic function of the form f(x)=a(x-h)^2+k whose graph is given on the right. f(x)=

Determine the quadratic function of the form f(x)=a(x-h)^2+k whose graph is given on the right. f(x)=
Transcript text: Determine the quadratic function of the form $f(x)=a(x-h)^{2}+k$ whose graph is given on the right. \[ f(x)= \]
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Solution

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Solution Steps

Step 1: Identify the Vertex

The vertex of the quadratic function is given as (2, -5).

Step 2: Substitute the Vertex into the Vertex Form

The vertex form of a quadratic function is \( f(x) = a(x - h)^2 + k \). Substituting \( h = 2 \) and \( k = -5 \), we get: \[ f(x) = a(x - 2)^2 - 5 \]

Step 3: Use Another Point to Find 'a'

We use the point (1, 4) to find the value of 'a'. Substitute \( x = 1 \) and \( f(x) = 4 \) into the equation: \[ 4 = a(1 - 2)^2 - 5 \] \[ 4 = a(1)^2 - 5 \] \[ 4 = a - 5 \] \[ a = 9 \]

Final Answer

The quadratic function is: \[ f(x) = 9(x - 2)^2 - 5 \]

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