In math What is an increase or decrease on a graph called?

well the increase on a graph is quite similar to the increase on a pariglament slope. They have the same diagonal slope. it is hard to define such a perculiar Word. It could be caled rising up, increasing hill, climbing up, so on. The most common would hyave to be upwad angle. A simple term. For decrease i would have to say the dropping angle. hope this helps you!