Definition: Abscissa - an abscissa, also known as the x-coordinate or ordinate, on a graph. The abscissa indicates the point at which an object's position or location is plotted on a coordinate plane. It is usually denoted by 'x' or 'a'. Definition: - The abscissa of a point on a Cartesian coordinate system represents the horizontal distance from the origin to the point. - The abscissa of a point gives us a measure of the x-coordinate of a point in our graph. - For a linear equation, it is used to determine the slope of the line; for quadratic equations (polynomials), it represents the y-intercept. Example: Let's say you have two points on the Cartesian plane. You might plot them with an abscissa and an ordinate, which are the coordinates of the point on the x-axis. - The point A has abscissa 'a' and ordinate 'b'. - The point B has abscissa 'b' and ordinate 'a'.

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