### Theory:

Let us consider $\frac{6}{4}$ and $-\frac{6}{4}$. First, let us plot  $\frac{6}{4}$.

• Here, the numerator $$6$$ is greater than the denominator $$4$$.
• Then, we have to convert it into a mixed fraction.
• A mixed fraction of $\frac{6}{4}$ is $1\frac{2}{4}$.
• Now, let us draw a number line and plot $$1, -1$$ and $$2, -2.$$
• Then the number $1\frac{2}{4}$ has to lie somewhere between $$1$$ and $$2$$.
• Now we divide the length between $$1$$ and $$2$$ into equal parts.
• The Denominator gives us the number of equal parts.
• It is $$4$$, so we divide it into $$4$$ equal parts.
• The numerator tells us the number of parts starting from $$1$$.
• Here, it is $$2$$. So we mark the point $$2$$ parts away from the $$1$$.

Similarly,  $-\frac{6}{4}$ can be marked using the same procedure because $-\frac{6}{4}$ is the corresponding value of $\frac{6}{4}$.
• We know that it lies between $$-1$$ and $$-2$$. So, we divide it into four equal parts and mark $$2$$ parts away from the $$-1.$$