These two equations are not parallel either perpendicular.
• To be parallel, they need to have the ,same slope,. In this case, the slopes are different:
m1 = 9 and m2 = -9.
• To be perpendicular, both slopes must have the follow property:
m1 * m2 = -1 or m1 = -1/m2.
That is, in this case, both slopes must be:
m1 = 9 and m2 = -1/9, then m1 * m2 = -1.
Therefore, the answer is Neither equations are parallel nor perpendicular.
