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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.
Answers. Relevance. Rating Newest Oldest. Best Answer: The point where the graph crosses the y-axis is called the y-intercept and has an x-coordinate of 0. Because the point is on the y-axis, it is not to the left or right of the origin. Hence, the x-coordinate is 0. This is important when finding the equation of the line, because the y-intercept is b is the slope-intercept form of an equation.