Can some give me the equations or tips on how to find them myself? (if you can't read it, or can't see the picture, message me)

To describe a sequence of transformations that maps triangle abc onto triangle a"b"c", a student starts with a reflection over the x-axis.how should the student complete the sequence of transformations to map triangle abc onto triangle a"b"c"? plz

An architect is designing a water fountain for a park she uses the given function to model the water jet flowing from the fountain nozzles where h(x) gives the height of the water jugs in feet x feet from the starting point h(x)=-1/20x+x+15

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?