Let's analyze the questions and the graph from the image.

The graph is labeled $f$ and shows the function $f(x)$ over the interval $[-5, 5]$. The questions pertain to understanding the behavior of $f(x)$ in terms of increasing/decreasing intervals, and the sign of its rate of change.

Question 5:

"On which of the following intervals is $f(x)$ negative and increasing?"

• The function $f(x)$ is negative where it lies below the x-axis, and increasing where the slope of $f(x)$ is positive.
• Looking at the graph, the interval where $f(x)$ is below the x-axis and increasing is between $B$ and $C$ (approx. from $x = -3$ to $x = -1$).

Answer: (B) The interval from B to C

Question 6:

"Which of the following statements about the rate of change of $f$ is true?"

• The rate of change of $f(x)$ refers to the derivative $f'(x)$.
• The options given are general descriptions that relate to whether $f'(x)$ is positive, negative, or zero.

Since the exact options are not visible, the statements are likely about the intervals where $f(x)$ is increasing or decreasing.

Likely analysis:

• $f'(x) > 0$ where $f(x)$ is increasing (positive slope).
• $f'(x) < 0$ where $f(x)$ is decreasing (negative slope).

Question 7:

"Which of the following statements about the rate of change of $f$ is true?"

This question seems similar to Question 6, but may ask about specific intervals.

Question 8:

"On which of the following intervals is $f(x)$ decreasing and the graph of $f'(x)$ concave up?"

• $f(x)$ is decreasing where $f'(x) < 0$.
• $f(x)$ is concave up where $f''(x) > 0$.

So, you are looking for an interval where the slope is negative (decreasing), and the curvature of $f(x)$ is concave up (like a U shape).

Answer: (D) The interval from E to F (assuming the options point to this interval).

Next Steps

Would you like more details or have any questions about these problems? Here are five related questions you might explore:

1. How do you determine where a function is concave up or down?
2. What does the first derivative test tell you about the function's local maxima and minima?
3. How can you apply the second derivative test to determine concavity?
4. What are the characteristics of a function's inflection points?
5. How can you find the exact points where the function changes from increasing to decreasing?

Tip: Always consider both the first and second derivatives to understand a function's behavior thoroughly.