Two lines are perpendicular when the product of their slope is equals to minus one. It is represented mathematically as
[tex]m_1m_2=-1[/tex]
From the option the answer will be B.
[tex]\begin{gathered} -4\times\frac{1}{4}=-1 \\ \text{where} \\ m_1=-4 \\ m_2=\frac{1}{4} \end{gathered}[/tex]
