Question

Adjacent figure is a vertical number line, representing integers. Observe it and locate the following point. If point $ \mathrm{D}$ is $ +8$, then which point is $ -8$?

+8 

Answer 1

We have,

Point $\mathrm{D}=+8$

Now, we have to locate point $-8$.

For that, we have to move vertically downwards i.e.

$$\begin{gathered} 8-(-8) \\ =8+8 \\ =16 \end{gathered}$$

We have to move $16$points downward from $\mathrm{D}$.

When we move from $\mathrm{D}$, $16$ points downwards we arrive at point $\mathrm{F}$.

Hence, point $-8$ is denoted by point $\mathrm{F}$.