My math McGraw-hill 5th grade page 97-98

Jayda's house is located at (1, 5). she can walk in a straight line to get to cristian's house. a fast-food restaurant is located at (11, 0) and partitions the way from jayda's house to cristian's house by a ratio of 5: 1. find the coordinate of cristian's house. me . im a little stuck

When y’all answer can y’all explain too !

For what value of (y) is 3^3/3^y =1/9