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X-Intercept of a Graph
An -intercept of a graph is the exact point where a curve or straight line crosses the horizontal -axis. Because every location plotted directly on the -axis possesses a -coordinate of zero, an -intercept is consistently represented by an ordered pair of the form , where denotes the specific -value of the crossing. To visually identify an -intercept from a graph, one must locate the point where the graphed figure meets the horizontal axis. For instance, if a line passes through the -axis at , its corresponding -intercept is recorded as the point .
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