Question

Let c be any constant number. Which of the following will always be perpendicular to -4x + y = -2?
Answer

y equals negative one over four times x plus c

y equals four x plus c

y equals one over four times x plus c

y equals negative four x plus c

Answer 1

if you have two lines with slopes m1 and m2, in order for them to be perpendicular is should be
\[ \large m_1\cdot m_2=? \]

Answer 2

hmm

Answer 3

if you have the lines
\[ \large y=m_1x+b_1\qquad\text{and}\qquad y=m_2x+b_2 \]
with slopes m1 and m2. for them to be perpendicular m1 and m2 must satisfy
\[ \large m_1\cdot m_2= \]