A hot air balloon rising vertically is tracked by an observer located 4 km from the lift-off point. At a certain moment, the ang
le between the observer’s line of sight and the horizontal is π 5 , and it is changing at a rate of 0.2 rad / min . How fast is the balloon rising at this moment?
Because you are just transforming it. It's not like you are changing the shape at all, you are just moving it to a different area on the grid. You can transform it over the x-axis, or you could transform it over the y-axis. It doesn't matter. Hope that answered your question.