1. The problem is to determine if a point or value lies to the left or right on a number line or coordinate system. 2. The general rule is: if a value is less than a reference point, it is to the left; if greater, it is to the right. 3. Mathematically, for a reference point $a$ and a value $x$: - If $x < a$, then $x$ is to the left of $a$. - If $x > a$, then $x$ is to the right of $a$. 4. This rule applies to one-dimensional number lines and can be extended to coordinate axes by comparing the relevant coordinate. 5. An easier way is to visualize the number line or axis and check the relative position by comparing values directly. 6. For example, if $a=3$ and $x=5$, since $5 > 3$, $x$ is to the right of $a$. 7. If $x=1$, since $1 < 3$, $x$ is to the left of $a$. 8. This simple comparison avoids complex calculations and helps quickly determine position.