SOLUTION: I am having a really hard time with Algebra. I do not know how to find the slope of a parallel line and the slope of a perpendicular line when the line is -8x-7=1.

Algebra ->  Linear-equations -> SOLUTION: I am having a really hard time with Algebra. I do not know how to find the slope of a parallel line and the slope of a perpendicular line when the line is -8x-7=1.      Log On


   



Question 821644: I am having a really hard time with Algebra. I do not know how to find the slope of a parallel line and the slope of a perpendicular line when the line is -8x-7=1.
Answer by TimothyLamb(4379) About Me  (Show Source):
You can put this solution on YOUR website!
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given:
-8x - 7 = 1
-8x = 8
x = -1
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the given line is a vertical line (x = -1)
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vertical lines have undefined slope
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however, we can say that all vertical lines are parallel to each other even though their slopes are not defined.
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we can also say that a line perpendicular to a vertical line must be horizontal.
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all horizontal lines have slope = 0
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