Represent the following numbers on the number line:
$7, 7.2, \frac{-3}{2}, \frac{-12}{5}$

(N/A) To represent the given numbers on the number line:
$1$. $7$: This is a positive integer. Locate $7$ on the number line to the right of $0$.
$2$. $7.2$: This is $7 + 0.2$. Divide the segment between $7$ and $8$ into $10$ equal parts. The second mark after $7$ represents $7.2$.
$3$. $\frac{-3}{2} = -1.5$: This is a negative rational number. It lies exactly halfway between $-1$ and $-2$ on the left side of $0$.
$4$. $\frac{-12}{5} = -2.4$: This is a negative rational number. Divide the segment between $-2$ and $-3$ into $5$ equal parts. The fourth mark to the left of $-2$ represents $-2.4$.