1. **State the problem:** We have the quadratic function $f(x) = -2x^2 - 16x - 29$.
We need to determine:
(a) Whether the function has a minimum or maximum value.
(b) The value of that minimum or maximum.
(c) The $x$-value where this minimum or maximum occurs.
2. **Formula and rules:**
A quadratic function $f(x) = ax^2 + bx + c$ has:
- A maximum if $a < 0$.
- A minimum if $a > 0$.
The vertex (which gives the min or max) occurs at:
$$x = -\frac{b}{2a}$$
The value of the function at the vertex is:
$$f\left(-\frac{b}{2a}\right)$$
3. **Identify coefficients:**
Here, $a = -2$, $b = -16$, and $c = -29$.
Since $a = -2 < 0$, the parabola opens downward, so the function has a **maximum** value.
4. **Find the $x$-value of the vertex:**
$$x = -\frac{b}{2a} = -\frac{-16}{2 \times -2} = -\frac{-16}{-4} = -4$$
5. **Find the maximum value by evaluating $f(-4)$:**
$$f(-4) = -2(-4)^2 - 16(-4) - 29 = -2(16) + 64 - 29 = -32 + 64 - 29 = 3$$
**Final answers:**
(a) The function has a **maximum** value.
(b) The maximum value is $3$.
(c) The maximum occurs at $x = -4$.
Quadratic Vertex C4C4E2
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