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Coordinate Plane - Basics Video Lecture | Mathematics (Maths) Class 9

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FAQs on Coordinate Plane - Basics Video Lecture - Mathematics (Maths) Class 9

1. What is a coordinate plane?
Ans. A coordinate plane is a two-dimensional plane formed by the intersection of two perpendicular number lines, called the x-axis and y-axis. It is used to locate points and graph functions.
2. How do you locate a point on a coordinate plane?
Ans. To locate a point on a coordinate plane, you need to use two numbers called coordinates. The first number represents the distance along the x-axis, and the second number represents the distance along the y-axis. The coordinates are written in the form (x, y), where x is the x-coordinate and y is the y-coordinate.
3. What is the origin of a coordinate plane?
Ans. The origin of a coordinate plane is the point where the x-axis and y-axis intersect. It is represented by the coordinates (0, 0). All other points on the plane are located with respect to the origin.
4. How do you graph a linear equation on a coordinate plane?
Ans. To graph a linear equation on a coordinate plane, you need to plot the points that satisfy the equation and then connect them with a straight line. You can find the points by assigning different values to either the x-coordinate or the y-coordinate and calculating the corresponding value for the other coordinate.
5. What is the significance of the quadrants in a coordinate plane?
Ans. The quadrants in a coordinate plane divide the plane into four regions. Each quadrant is numbered from I to IV in a counterclockwise direction. The quadrants help in determining the signs of the coordinates and provide a reference for locating points. For example, points in quadrant I have positive x and y coordinates, while points in quadrant III have negative x and y coordinates.
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