15 dogs come to a park that can only hold 1/10 or 10%
how many can the park hold and how many have to go to a different park

Well first divide 15 by 10. You have 1.5 so 1.5 dogs can stay and the other 13.5 leave. 

Ifound this on google “that means that the graph of a function with direct variation has these features: it is a straight line: because the slope is the ratio y/x = k. it passes through the origin (0,0): because y = kx = k (0) = 0.” i hope this you for what your looking for