The graph shows a parabola, and the question asks for the values of $f(5)$, $f(8)$, and where $f(x) = 1$.

1. Find $f(5)$ and $f(8)$:

• $f(5)$: From the graph, when $x = 5$, the y-coordinate is approximately 2.
• $f(8)$: When $x = 8$, the y-coordinate is approximately -2.

2. Solve $f(x) = 1$:

• The graph shows that $f(x) = 1$ at two points, around $x = 2$ and $x = 6.5$.

Would you like more details or have any other questions?

Related Questions:

1. What is the vertex form of a parabola, and how can we find it?
2. How do you determine the axis of symmetry from a parabolic graph?
3. How can we derive the equation of a parabola given its graph?
4. What does the y-intercept represent on a graph?
5. How do you find the x-intercepts (roots) of a quadratic function?

Tip: Always check values on a graph carefully; slight errors can affect answers.