It seems like you are referring to a specific graph and questions related to it, but I do not have access to the graph or the context needed to provide the answers. However, I can help you understand how to respond based on common geometric and algebraic concepts:
a. Triangles ABC and CDE are called - This could refer to "similar triangles" or "congruent triangles," depending on their properties. If their angles are the same or their sides are proportional, use "similar."
b. The slope of line AE can be written as - The slope formula is typically written as \( m = \frac{y_2 - y_1}{x_2 - x_1} \). You might express it in that form or as a specific numerical value if given in the graph.
c. This is a - This might refer to a "linear" relationship if it describes a straight line, or it could specify a "quadratic" or "exponential" relationship depending on the nature of the graph.
Without the graph, I'm unable to give precise responses, but I hope these guidelines help you fill in the responses correctly! If you provide more specific details, I can assist further.