SOLUTION: Determine which pair of equations represent parallel lines and which pair represents perpendicular lines 7. a. x + 2y = 5 ___________ __ &#63731

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Question 473082: Determine which pair of equations represent parallel lines and which pair represents perpendicular lines
7.
a. x + 2y = 5 ______________
y − 2x = 7
b.  2x + y = 7
 −7y =14x−21
______________
c. x − y = 5 ______________
x + y = 7
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