SOLUTION: 1. By looking at an equation of a line, how can you tell if the line is horizontal?
(I don't understand this question at all!)
Algebra.Com
Question 352780: 1. By looking at an equation of a line, how can you tell if the line is horizontal?
(I don't understand this question at all!)
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
All straight lines in 
(with one notable exception as to classification) can be represented by an equation in slope-intercept form, namely:
Horizontal lines have a zero slope. So if you ever see 
, or as is much more likely, 
, where 
is any real number, then you have a horizontal line.
The exception noted above refers to vertical lines where the slope is undefined. In the case of vertical lines, you would have an equation consisting of 
set equal to some constant value.
John
My calculator said it, I believe it, that settles it
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