The slopes of perpendicular lines are negative reciprocals
parallel lines have the same slope
1turn = 360 half a turn is 180
360+180=540
If a submarine is 756 feet below sea level in order to come to 0 sea level it will have to rise as much as it dropped which is 756 feet.
3(3^8) this is how you write it as power. however if you simplify it will be 19683 ft
