Question

Plz help. Which lines are perpendicular to the line y – 1 = (x+2)? Check all that apply.

y + 2 = –3(x – 4)

y − 5 = 3(x + 11)

y = -3x –

y = x – 2

3x + y = 7

Answer 1

Hello there,

plz help. Which lines are perpendicular to the line y – 1 = (x+2)? Check all that apply.

Answer: None.

Tip: The third option is incomplete

Answer 2

None

Explanation:

To be perpendicular, the line must have the negative reciprocal slope of the line. For example, if the slope is 8 then the perpendicular slope is -1/8. Here the slope is 1. So we are looking for -1.

None of the functions listed have -1 as their slope.