Questions: The figure above shows the graph of a function k. Which of the following statements about k is correct? (A) k is increasing and the graph of k is concave up. (B) k is increasing and the graph of k is concave down. (C) k is decreasing and the graph of k is concave up. (D) k is decreasing and the graph of k is concave down.

Transcript text: 9. The figure above shows the graph of a function $k$. Which of the following statements about $k$ is correct? (A) $k$ is increasing and the graph of $k$ is concave up. (B) $k$ is increasing and the graph of $k$ is concave down. (C) $k$ is decreasing and the graph of $k$ is concave up. (D) $k$ is decreasing and the graph of $k$ is concave down.