In sunlight, a vertical stick has a height of 4 feet and casts a shadow 2 feet long at the same time that a nearby tree casts a shadow 18 feet long how tall is the tree

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

Then just do it (lol)