Now that we know the slopes of the lines, we can determine whether they are parallel, perpendicular, or neither. Remember that parallel slopes are the same and perpendicular slopes are opposite reciprocals.
m_1=4/5
m_2=5/4
From here, we can conclude that the lines are neither perpendicular nor parallel.
Graph
Let's graph the lines to verify that they are neither perpendicular nor parallel. We do can this by plotting the points and drawing lines through them.
As we can see, the lines are neither perpendicular nor parallel.
