Three friends are buying seashells at the gift shop on the beach. Melanie buys 2 seashells for $0.80
Rosi buys 5 seashells for $2.00. Carlos buys 4 seashells for $1.60. Use a graph to determine whether
the number of seashells and the cost have a proportional relationship. If so, what is the constant of
proportionality and what does it mean?

Sample response: if the graph passes the horizontaline test, then the function is one to one. functions that are one to one have inverses that a therefore, the inverse is a hinction compare your response to the sample response above. what did you include in your explanation? a reference to the horizontal-line test d a statement that the function is one-to-one the conclusion that the inverse is a function done

You so much whoever answers with accuracy •the parent function of the graph of f(x) is the square root function, which was reflected across the x-axis. which of the following is the equation of f(x)?

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?