What do roller coasters, astronaut training, and a curved shape of a dam all have in common?

They take advantage of the properties of parabolas to make theme parks fun, train astronauts, and cut construction costs!
Hope this helps!

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