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The y-axis is one of the two axes in a two-dimensional coordinate system
The y-axis is one of the two axes in a two-dimensional coordinate system. It is vertical and is perpendicular to the x-axis. The x-axis and the y-axis intersect at the origin, which is denoted by the point (0,0).
The y-axis is used to measure the vertical position or height of a point on a graph. The values on the y-axis are called the y-coordinates. Points above the origin have positive y-coordinates, while points below the origin have negative y-coordinates.
On a graph, the y-axis is usually labeled with numerical values that correspond to the positions of points on the y-axis. These labels help in identifying the height of points and make it easier to interpret the graph.
The y-axis is also crucial for analyzing functions and their graphs. In a function, the input variable (usually denoted as x) is plotted on the x-axis, and the output variable (usually denoted as y) is plotted on the y-axis. By graphing the function on a coordinate plane, we can visualize the relationship between the input and output values.
In summary, the y-axis is the vertical axis in a 2D coordinate system. It measures the vertical position of points, is labeled with y-coordinates, and is fundamental for graphing functions and analyzing their behavior.
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