# How to use the quadratic equation, given a certain Y value, to find a specific X value.

*label*Algebra

*timer*Asked: Feb 13th, 2015

**Question description**

I'm trying to find out how to find a specific year (the X value) of when Y = 2.5 billion given the equation y=1.131006x^2-4446.504516x+4370335.448711