(Geometry) Which lines are perpendicular? I. y = 7/3 x -7
II. y + 1= - 1/3 (x - 1/7)
III. y = 3/7 x - 1/5
(If there is more than one, please state it in your response)

Given: jk ||lm prove: _2 = 27 statement justification 1. jk ||lm 1. given 2.26 = 27 3.22 = 26 2. 3. 4. _2 = 27 4. corresponding angles theorem transitive property of equality vertical angles theorem substitution property of equality