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Y-Intercept of a Graph
A -intercept of a graph is the exact point where a curve or straight line intersects the vertical -axis. Since every position located squarely on the -axis features an -coordinate of zero, a -intercept always takes the ordered pair form , where represents the specific -value at the intersection. To visually determine a -intercept on a coordinate plane, one must locate where the graphed line or curve touches the vertical axis. For example, if a graph crosses the -axis at , its -intercept is identified as the point .
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