The number line for the points can be created by adding the yards above and then deducting the yards below.
It should be noted that a number line is a graduated straight line which serves as na abstraction for real numbers.
The thing that zero represent on a number line is that's it's considered the origin of a number line. The numbers to the left are negative and those to the right are positive.
The two points that are opposites will be the bird and dolphin since ones below and the.otyer is above.
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