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Report Abuse. the point where the graph crosses the y-axis is the y-intercept, and the x-coordinate of this is 0 since it is crossing the y-axis (any point on the y-axis has an x-coordinate of 0). bialy Â· 7 years ago. Thumbs up.
The x-and y-intercepts of a graph. The x-intercept of a graph is that value of x where the graph crosses the x-axis. The y-intercept is the value of y where it crosses the y-axis. To find the x-intercept, we have to find the value of x where y = 0 -- because at every point on the x-axis, y = 0.o find the y-intercept of a graph, we must find the value of y when x = 0 -- because at every point on the y-axis, x = 0. But when the equation has the form. y = ax + b,