- #1
Nelo
- 215
- 0
Homework Statement
2x-1
_____ > 0
5x+3
Homework Equations
The Attempt at a Solution
Just wondering, my teacher taught us that youre only supposed to look at what makes the denominator = 0, and don't look at the numerator because it has no affect on anything.
So, if i were to solve that id have to use -3/5
so, case 1 would be x < -3/5 which is -0.6, so if i plug in a number less like -1 into the bottom id get a negetive value, however am i plugging it in the top as well...? she said just look @ bot
or, suppose i have something with two vertical asymptotes like..
_(x+5)_______ < 0
(x+3) (x-1)
Im just looking at the values that make it negetive right? so -3, and 1. if i were to set a interval chart up and say x < -3 , i plug like -4 into (x+3) and into (x-1) and id get a negetive by a negetive which makes it positive. so the sign wouldn't flip on case 1