SOLUTION: what is the equation of line that is perpendicular to x=4 and goes through (-15,90)?

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Question 679850: what is the equation of line that is perpendicular to x=4 and goes through (-15,90)?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
The equation +x+=+4+ is a vertical line through (4,0)
Any line perpendicular to this line will be parallel to
the x-axis, and will have an equation that looks like
+y+=+c+
If it goes through ( -15,90 ), the equation is
+y+=+90+
( x can be anything, and it doesn't affect the equation )