Line C is a straight line in the coordinate geometry plane defined by the equation y=ax+b, for which a and...

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A

B

C

D

E

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Source: Veritas Prep

Line C is a straight line in the coordinate geometry plane defined by the equation y=ax+b, for which a and b are constants. What is the value of a?

1) Line C is perpendicular to a line with the equation y=−2x+5
2) Line C is parallel to a line with the equation y=(1−a)x+b+2

The OA is D
Source: — Data Sufficiency |