1. **State the problem:** Find the y-intercept and x-intercepts of the function $$g(x) = -(x+5)^2 + 8$$ and describe the graph shape.
2. **Y-intercept:** The y-intercept occurs when $$x=0$$. Substitute $$x=0$$ into the function:
$$g(0) = -(0+5)^2 + 8 = -25 + 8 = -17$$
So, the y-intercept is $$-17$$.
3. **X-intercepts:** The x-intercepts occur when $$g(x) = 0$$. Set the function equal to zero:
$$0 = -(x+5)^2 + 8$$
Rearrange:
$$-(x+5)^2 = -8$$
Multiply both sides by $$-1$$:
$$\cancel{-}(x+5)^2 = \cancel{-}(-8)$$
$$(x+5)^2 = 8$$
Take the square root of both sides:
$$x+5 = \pm \sqrt{8} = \pm 2\sqrt{2}$$
Solve for $$x$$:
$$x = -5 \pm 2\sqrt{2}$$
4. **Graph shape:** The function is a downward-opening parabola because of the negative sign in front of the squared term. The vertex is at $$(-5, 8)$$, which is the maximum point.
**Final answers:**
- Y-intercept: $$-17$$
- X-intercepts: $$-5 - 2\sqrt{2}, -5 + 2\sqrt{2}$$
- Graph shape: downward-opening parabola with vertex at $$(-5, 8)$$.
Parabola Intercepts 892E59
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