Try and represent $\dfrac{8}{5}$ and $-\dfrac{7}{4}$ on a number line.

To represent $\dfrac{8}{5}$ on the number line :

⇒ $\dfrac{8}{5} = 1\dfrac{3}{5}$, so it lies between 1 and 2.

⇒ Divide the unit interval between 1 and 2 into 5 equal parts and move 3 parts to the right of 1.

To represent $-\dfrac{7}{4}$ on the number line :

⇒ $-\dfrac{7}{4} = -1\dfrac{3}{4}$, so it lies between -2 and -1.

⇒ Divide the unit interval between -2 and -1 into 4 equal parts and move 3 parts to the left of -1 (toward -2).

Hence, $\dfrac{8}{5}$ lies between 1 and 2, and $-\dfrac{7}{4}$ lies between -2 and -1 on the number line.