A straight line parallel to the y-axis has equation ____. �

1.	A straight line parallel to the y-axis has equation ____.
A.	\[x=a\]
B.	\[~y=a\]
C.	\[y=x\]
D.	\[~y=-x\]
Answer» B. \[~y=a\]

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A straight line parallel to the y-axis has equation ____.

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