Answer:
To use coordinates on a coordinate grid, you first need to determine the scale of the grid, which is represented by the proportion M=24R. This means that for every 24 units on the grid, the corresponding real-world distance is equal to R units.
Once you have determined the scale of the grid, you can use the coordinates to locate points on the grid. To do this, you will need to know the coordinates of at least one point on the grid, which is known as the origin. The origin is typically represented by the coordinates (0,0).
To find the coordinates of a point on the grid, you can use the following steps:
- Locate the point on the grid that you want to find the coordinates for.
- Measure the distance from the point to the origin, using the grid scale as a guide. This distance is the point's x-coordinate.
- Measure the distance from the point to the y-axis, using the grid scale as a guide. This distance is the point's y-coordinate.
- The coordinates of the point will be a pair of numbers in the form (x, y), where x is the point's x-coordinate and y is the point's y-coordinate.
For example, if you wanted to find the coordinates of a point that is 5 units to the right of the origin and 3 units above the y-axis, the coordinates of the point would be (5, 3).