## Precalculus (6th Edition) Blitzer

At $x=2$ the graph of ${{Y}_{2}}$ intersects the $x$ -axis.
The table shows different values x for different values of y. Now, check the values of x and y in the above table. The point at which the graph will intersect the x axis will have the value of y as 0. So, $y=0$ at $x=2$. Therefore, it passes the $x$ -axis at $x=2$.