I need help using the distance formula

The details are: lion section centered at point (7,9); Crocodile river represented by y=4; Lion Hill is at (7,9); Hippo Pond (3,7); Elephant forest (10, 6)

I need to find the distance from the center of lion section to the point (x,y). what is equation. containx- andy-terms.

I also need to find distance from the directrix (the Crocodile River) to the point (x,y)? equation. contain ay-term.

Then Set these two distances equal to each other.