Please include explanation

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

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.