SOLUTION: Given the two lines � 2x − y = −8 � x + 2y = 10 determine which of the following best describes their relationship to each other. A. parallel B. perpendicular C.

Question 1001962: Given the two lines
� 2x − y = −8
� x + 2y = 10
determine which of the following best describes their relationship to each other.
A. parallel
B. perpendicular
C. congruent
D. skew
E. none of the above
Please explain.

Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!

--------------------
write both in slope-intercept form where is a slope and is y-intercept
recall that:
parallel lines have slope
perpendicular lines have slopes negative reciprocal of each other
=>
=>
--------------------
since is negative reciprocal of , your lines are perpendicular
here is a graph:

and, your answer is: B.

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SOLUTION: Given the two lines � 2x &#8722; y = &#8722;8 � x + 2y = 10 determine which of the following best describes their relationship to each other. A. parallel B. perpendicular C.

SOLUTION: Given the two lines � 2x − y = −8 � x + 2y = 10 determine which of the following best describes their relationship to each other. A. parallel B. perpendicular C.