excellent statement. yes, you can find them both that way. i must admit however, that i slept much of the parabola chapters, and didnt care for them in 9th grade. you may refresh me if you like. it only helps to know. (no, im not being asinine to you, please teach me, i forgot.)
Ummm.... This is not the time or place to teach elementary math. I suggest you buy a good book on math and also one on grammar.