Points (3; y), B (x; -1) are symmetrical about the origin. Find the numbers x and y.
| September 11, 2021 | education
Since two points A and B with coordinates (3; y) and (x; -1), respectively, are symmetric about the origin. then the abscissas and ordinates of these points must be equal in absolute value and have different signs.
Therefore, the variable x must be equal to -3, the variable y must be equal to 1 and point A will have coordinates (3; 1), and point B will have coordinates (-3; -1).
Answer: x = -3, y = 1.
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