11. A line with a positive slope and a line with a negative slope are perpendicular. 12. A vertical line and a horizontal line are perpendicular. 13. Two horizontal lines are perpendicular.

Question

11. A line with a positive slope and a line with a negative slope are perpendicular.

12. A vertical line and a horizontal line are perpendicular.

13. Two horizontal lines are perpendicular.

please help

Answer 1

Are you supposed to determine if the statements are true or false?

11) Is true if the slope of the second = -1/m, where m is the slope of the first line.

12) Is true, like the x and y axis are perpendicular⊥.

13) False, The lines would be parallel

It sometimes helps if you make a sketch of the lines in question.