Given equation of line ${\mathrm{L}}_1$ is $\mathrm{y}=4$ 

 

Write the slope of line ${\mathrm{L}}_2$, if ${\mathrm{L}}_2$ is the bisector of angle $\mathrm{O}$.

Given equation of line ${\mathrm{L}}_1$ is $\mathrm{y}=4$

If ${\mathrm{L}}_2$ is the bisector of angle $\mathrm{O}$.

Write the co-ordinates of point $\mathrm{P}$. 

Given equation of line ${\mathrm{L}}_1$ is $\mathrm{y}=4$

If ${\mathrm{L}}_2$ is the bisector of angle $\mathrm{O}$.

Find the equation of ${\mathrm{L}}_2$.

Find equation of $\mathrm{AB}$. 

Find equation of $\mathrm{CD}$.