Find the distances between the points of the coordinate line: A (2) and B (7); A (-2) and B (7); A (20)
| September 2, 2021 | education
Find the distances between the points of the coordinate line: A (2) and B (7); A (-2) and B (7); A (20) and B (70); A (-20) and B (70).
In order to calculate the distance between points on the coordinate line, it is necessary to subtract from the coordinate of the point that is to the right on the coordinate line, the coordinate of the point that is to the left. Simply put – from the larger, you need to subtract the smaller:
1) A = 2; B = 7.
AB = 7 – 2 = 5.
2) A = – 2; B = 7.
AB = 7 – (- 2) = 7 + 2 = 9.
3) A = 20; B = 70.
AB = 70 – 20 = 50.
4) A = – 20; B = 70.
AB = 70 – (- 20) = 70 + 20 = 90.
Answer: 1) AB = 5; 2) AB = 9; 3) AB = 50; 4) AB = 90.
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