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More specifically, 1  an x-intercept is a point in the equation where the y-value is zero, and. 2  a y-intercept is a point in the equation where the x-value is zero.  Find the x- and y-intercepts of 25x2 + 4y2 = 9.
x-axis-The horizontal axis of a graph, with which the x-values are plotted. x-coordinate-The number which corresponds to the value of x in an ordered pair. x-intercept-The point at which the graph of a line crosses the x-axis. The point at which y = 0. xy-graph-A two-dimensional way of representing points.