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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.
Now remember that we said that when a quadratic crosses the x axis (when y = 0), we call that point an x-intercept, root, zero, solution, value, or just â solving the quadratic â. And also remember that not all of the âsolutionsâ were real â when the quadratic graph never touched the x axis.