Answer:
Two lines that intersect and form right angles are called perpendicular lines.
Let the number = x
It would be: 9x + 6 = 456
9x = 456 - 6
9x = 450
x = 450 / 9
x = 50
In short, Your Answer would be 50
Hope this helps!
-7
-(-7) is 7 because two negative signs result in a positive. The opposite integer of 7 is -7
A. the first one will give you a perpendicular line to BA
