The graph of a function f is given. Use the graph to answer the question.Is f(40) positive or negative?

To determine whether $f(40)$ is positive or negative based on the graph of a function $f$, follow these steps:

1. Locate 40 on the x-axis: Find the point where $x = 40$ on the horizontal axis of the graph.

2. Draw a vertical line: Extend a vertical line from $x = 40$ to intersect the curve of the function $f$.

3. Identify the y-value: Observe the corresponding y-value (i.e., $f(40)$) where the vertical line intersects the graph.

4. Evaluate the sign:

   • If the intersection point lies above the x-axis (y > 0), then $f(40)$ is positive.
   • If the intersection point lies below the x-axis (y < 0), then $f(40)$ is negative.

5. Conclusion: Based on the intersection point, conclude whether $f(40)$ is positive or negative.

Final Answer

Without the visual graph, I cannot directly ascertain the value of $f(40)$. However, based on the process described, you can determine if $f(40)$ is positive or negative by examining the intersection point on the graph.