SOLUTION: Identify the lines that are perpendicular: http://my.thinkwell.com/questionbank/92001-93000/92175/img/243356.gif Options: Lines 1 and 3 are perpendicular. Lines 2 and 4

Question 942015: Identify the lines that are perpendicular:
http://my.thinkwell.com/questionbank/92001-93000/92175/img/243356.gif
Options:
Lines 1 and 3 are perpendicular.
Lines 2 and 4 are perpendicular.
Lines 1 and 3 are perpendicular, and Lines 2 and 4 are perpendicular.
OR
None of the lines are perpendicular.
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

Lines 2 and 4 are perpendicular.

line 2
=> slope
and line 4
=> slope
is negative reciprocal of

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