Question

⦁ Use both methods to find the distance between the points on the number line.

Method A: Count the number of units between the points.


Method B: Take the absolute value of the difference of the two numbers.


When taking the absolute value, show that the greater number or the lesser number can be the subtrahend (the number subtracted).




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PLEASE GIVE ME A GOOD EXPLANATION AND ANSWER SO I CAN ALSO UNDERSTAND THIS.

Answer 1

4 and 4

Explanation:

Method A

1) Method A: Let 2 be the starting point and -2, the finishing one. Counting between 2 and -2, we can count a distance of 4 units. That's the simplest way, but not convenient to great numbers on the Number Line.

Method B:

There is no such thing as a negative distance, as a physical quantity. So this is the reason why we need to compute the absolute value of two numbers, which is simply what was done on Method B.

|2-(-2)|=|4|=4

As we are dealing with absolute values, the order is not relevant after all, the result remains the same. Take a look:

|-2-2|=|-4|=4

That's why the greater (2) or the lesser number (-2) can be the subtrahend (in bold within the brackets.