Question

PLEASE HELP

Which value represents the slope of a line perpendicular to the equation?

Answer 1

`\text{Let}\ k:y=m_1x+b_!\ \text{and}\ y=m_2x+b_2.\\\\l\ \perp\ k\iff m_1m_2=-1\to m_2=-(1)/(m_1)\\\\\text{We have}\ y=(9)/(11)-(5)/(4)x\to m_1=-(5)/(4).\\\\m_2=-(1)/(-(5)/(4))=-\left((4)/(5)\right)=(4)/(5)\\\\Answer:\ \boxed{D.\ (4)/(5)}`