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The slopes of two lines are 5 and 1/5. Because of this, we can conclude that these two lines are which of the following?

Vertical 
None of these
Parallel
Perpendicular

User Buffy
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1 Answer

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Note that
a. When two lines are parallel, their slopes are equal.
b. When two lines are perpendicular, the product of their slopes is -1.
c. A vertical line has undefined slope.
d. A horizontal line has a slope of zero.

The two slopes are 5 and 1/5.
The product of the slopes is 5*(1/5) = 1.

Test the given answers.
Neither line is vertical because each line has a defined slope.
The lines are not parallel, cause their slopes are not equal.
The lines are not perpendicular because the product of their slopes is not equal to -1.

Answer: None of these


User Taehoon
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