The answer is -5 1/2
[tex]\text{the answer is -5}\frac{1}{2}[/tex]in the number line, it starts from x at point zero and ends at -8
the number line is divded by 4 intervals starting from zero
[tex]\begin{gathered} Q-R\text{ fell between -4 and -6 and the only option with that range that satisfy with K is } \\ -5\frac{1}{2} \end{gathered}[/tex]