1. Understand that the line x=6 looks like this => |, It is a vertical line, so you need to find a line that is horizontal. (y=____)
2. we know a horizontal line is y=__,but it needs to pass through (-1,-2).
3. The key here is the y value in the point (-1,-2) which is -2. Since we are dealing with a horizontal line we don't need to worry about the x.
4. The only line that is perpendicular to x=6 and passes through the point (-1,-2) is therfore: y=-2. which looks like this => ----
*the two lines look like this=> --|--
Hope this helps!
And May the Force Be With You
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