PLS HELP WITH BOTH SCREEN SHOTS I WILL MARK BRAINLIEST

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

Meghan has created a diagram of her city with her house, school, store, and gym identified. a. how far is it from the gym to the store? b. meghan also wants to walk to get some exercise, rather than going to the gym. she decides to walk along arc ab. how far will she walk? round to 3 decimal places.

700 miles the train takes 5 hours to a travel the distance at what unit rate is the train traveling?