The lines y = (a - 5)x 5 and y = -2x 7 are perpendicular if a = – McqOptions

MCQOPTIONS

1.	The lines y = (a - 5)x 5 and y = -2x 7 are perpendicular if a =
A.	11/2
B.	5
C.	-2/9
D.	9/2
Answer» B. 5

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