[![enter image description here](https://i.stack.imgur.com/J0BxN.png)](https://i.stack.imgur.com/J0BxN.png)

Hi, I'm trying to learn opportunity cost and this is an image I took from Khanacadmeny. They said that due to the bowed out shape, it means that there is an increasing opportunity costs of production. Does it mean increasing opportunity cost of producing basketballs when the curves moves along the x axis? Such that at point(6,6), there is a greater opportunity cost of producing basketballs compared to (3,7.5), which is the efficient point located on the left? Would this also work in reverse? Such as the opportunity cost of making fidget spinners is higher at point (3,7.5) compared to (6,6) since you are giving up more basketballs? Thanks!