X = 4 graphs to a vertical line because the x axis is horizontal, and if a line always has a constant x value of 4, it will not move horizontally, because to do that, the x value has to change.
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if you mean x=4, then yes, the graph is a straight line which passes through the point (4,0)
x = 4 is a straight line that is vertical when plotted on the xy graph, where y is the vertical axis and x is the horizontal axis. A vertical line has an infinite slope; the slope is infinity
Vertical lines only intersect the x-axis. This means that the equation of a vertical line is x=n. The variable n is the coordinate where on the x-axis the line goes.
Because you have only given the point at which a line crosses the "x" axis. Since x = 4, we can draw it only vertically through (4,0).
"The" vertical line is wrong; there are lots of vertical lines on a coordinate plane. In the usual x-y coordinate system, such a line has an equation of the form:x = a (for some constant "a"); for example: x = 3
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