10 points please help

Asystem of equations has 1 solution. if 4x-y=5 is one of the equations , which could be the other equation ?

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.

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14