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Plotting Points on the Coordinate Plane Video Lecture | Crash Course: Class 9

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FAQs on Plotting Points on the Coordinate Plane Video Lecture - Crash Course: Class 9

1. What is the coordinate plane?
Ans. The coordinate plane is a two-dimensional grid formed by the intersection of a horizontal line called the x-axis and a vertical line called the y-axis. It is used to represent and locate points using their coordinates.
2. How do you plot points on the coordinate plane?
Ans. To plot a point on the coordinate plane, you need its coordinates (x, y). Start by locating the x-coordinate on the x-axis and the y-coordinate on the y-axis. Then, draw a point at the intersection of these two values.
3. What are the quadrants in the coordinate plane?
Ans. The coordinate plane is divided into four quadrants: Quadrant I, Quadrant II, Quadrant III, and Quadrant IV. Quadrant I is located in the top right, Quadrant II in the top left, Quadrant III in the bottom left, and Quadrant IV in the bottom right.
4. How can you determine the distance between two points on the coordinate plane?
Ans. To determine the distance between two points (x1, y1) and (x2, y2) on the coordinate plane, you can use the distance formula. The distance formula is: sqrt((x2 - x1)^2 + (y2 - y1)^2). Calculate the differences in x-coordinates and y-coordinates, square them, sum them, and then take the square root of the result.
5. How can you find the coordinates of the midpoint of a line segment on the coordinate plane?
Ans. To find the coordinates of the midpoint of a line segment with endpoints (x1, y1) and (x2, y2) on the coordinate plane, you can use the midpoint formula. The midpoint formula is: ((x1 + x2)/2, (y1 + y2)/2). Add the x-coordinates and divide by 2 to find the x-coordinate of the midpoint. Similarly, add the y-coordinates and divide by 2 to find the y-coordinate of the midpoint.
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