## Geometry: Common Core (15th Edition)

The point $(-5,0)$ must lie on the $x$-axis.
Since this point has a $y$ coordinate of $0$, it is $0$ units above or below the origin. Any point that is $0$ units above or below the origin must lie on the $x$ axis, because it is the line of points which lie $0$ units vertically from the origin.