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Bunuel
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Bunuel
If line A is parallel to line B, what is the slope of line B?

(1) Line A is parallel to the x-axis.
(2) Line A is perpendicular to the line x = 3

This was a simple one.

Line A is parallel to line B.

Therefore, slope of line A = slope of line B

(1) Line A is parallel to x-axis > Line A is horizontal > Slope of A = Slope of B = 0 (SUFFICIENT)

(2)Line A is perpendicular to the line x = 3 > x = 3 is a vertical line and A being perpendicular to it, has to be a horizontal line > Slope of A = Slope of B = 0 (SUFFICIENT)

Answer: D
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Hello from the GMAT Club BumpBot!

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