no, false
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Has a positive gradient (in a y=mx+c graph)
A vertical line is neither positive nor negative because the slope is undefined. An undefined slope creates a vertical line, hence no slope to calculate. An example of a vertical line would be x=2 or a "slope" of 2/0 (undef. slope). In addition, a vertical line is not even a function because it has repeating input(x) values.
The line will be going 'uphill' from left to right
In a vertical line, all the x values will be the same. This means that all vertical lines will have the equation X=?
The equation of every vertical line is [ X = the value of 'x' where the line crosses the x-axis ].