Which of the following lines are perpendicular to the line y = –one-halfx + 4? (you may choose more than one answer)

Question

(2 points)
Responses

2x – y = 1

y = 2x

2x + y = 1

one-half x – y = 2

2x – y = 3

Answer 1

The line y = 2x is perpendicular to the line y = -one-halfx + 4.
The line 2x + y = 1 is also perpendicular to the line y = -one-halfx + 4.