Question

Determine which of the four lines are perpendicular?

Iy=3x-24
II. 3x + 4y = 12
III.The line thru (1,-3) and (7.-11)
IV. 3x – 4y = 20
Line I is perpendicular to Line IV
Line I is perpendicular to Line III
Line Il is perpendicular to Line IV
Line I is perpendicular to Line III and Line IV

Answer 1

9514 1404 393

Answer:

Line III is perpendicular to line IV.

Explanation:

See the attached graph. The only pair of perpendicular lines is lines III and IV.

None of the offered answer choices is correct.*

_____

We suspect a typo in the equation for line I. if it is ...

y = (3x -2)/4

then it is parallel to line IV and perpendicular to line III.