Understanding Vertical and Horizontal Lines - High School Math
Card 0 of 4
Which of the following is a vertical line?
Which of the following is a vertical line?
A vertical line has infinitely many values of 
but only one value of 
. Thus, vertical lines are of the form 
, where 
is a real number. The only equation of this form is 
.
A vertical line has infinitely many values of
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Which of the following is a horizontal line?
Which of the following is a horizontal line?
A horizontal line has infinitely many values for 
, but only one possible value for 
. Thus, it is always of the form 
, where 
is a constant. Horizontal lines have a slope of 
. The only equation of this form is 
.
A horizontal line has infinitely many values for
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Which of the following is a vertical line?
Which of the following is a vertical line?
A vertical line is one in which the 
values can vary. Namely, there is only one possible value for 
, and 
can be any number. Thus, by this description, the only vertical line listed is 
.
A vertical line is one in which the
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Which of the following has a slope of 0?
Which of the following has a slope of 0?
A line with a slope of zero will be horizontal. A horizontal line has only one possible value for 
, and 
can be any value.
Thus, the only given equation which fits this description is 
.
A line with a slope of zero will be horizontal. A horizontal line has only one possible value for
Thus, the only given equation which fits this description is
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