X-intercept
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The x-intercept is the x-coordinate of the point at which a line intersects the x-axis. If the line is represented in the point-slope form, i.e., <math> y = m \cdot x +b</math> and <math>m \neq 0</math>, then the x-intercept is <math>-b/m</math>. if <math> m = 0</math>, the line doesn't cross the x-axis (case <math>b \neq 0</math>) - so there is no intersection, or the line is identical to the x-axis (case <math>b = 0</math>).
- See also: y-intercept