coordinate plane
The coordinate plane is a two-dimensional plane formed by the intersection of two perpendicular lines, namely the x-axis and the y-axis
The coordinate plane is a two-dimensional plane formed by the intersection of two perpendicular lines, namely the x-axis and the y-axis. It is commonly used in mathematics to represent and analyze geometric figures, functions, and equations.
The x-axis is a horizontal line that extends to the right and left of the origin (0,0) and is labeled with positive numbers to the right (increasing) and negative numbers to the left (decreasing). The y-axis is a vertical line that extends up and down from the origin, also labeled with positive numbers upward (increasing) and negative numbers downward (decreasing).
Each point on the coordinate plane is uniquely defined by an ordered pair (x, y), where x is the distance along the x-axis and y is the distance along the y-axis. The ordered pair (0,0) represents the origin, which is the point where the two axes intersect.
To locate a point on the coordinate plane, you start at the origin and move along the x-axis first, then move along the y-axis. For example, if you have the point (2,3), you would move 2 units to the right along the x-axis, and then 3 units upward along the y-axis, to locate the point.
The coordinate plane is divided into four quadrants, labeled as I, II, III, and IV, moving counterclockwise from the top right quadrant. The positive x-axis divides the plane into quadrants I and II, and the positive y-axis divides the plane into quadrants I and IV. Points in quadrant I have both positive x and y values, points in quadrant II have negative x and positive y values, points in quadrant III have negative x and y values, and points in quadrant IV have positive x and negative y values.
The coordinate plane is used to graph various mathematical functions and relations, as well as to solve problems involving geometric shapes and transformations. It provides a visual representation of mathematical concepts and allows for easier analysis and understanding of mathematical relationships.
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