Question 890938: The line is perpendicular to the line x=-1 and it passes through (-1,1).
Answer by KMST(5328)   (Show Source):
You can put this solution on YOUR website! The line x=-1 is a vertical line.
All the points on that line have x=-1.
A line perpendicular to a vertical line must be horizontal, and all its points will have the same value for y.
If that horizontal line passes through (-1,1), which has y=1, its equation must be y=1 .
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