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January 27, 2015

January 27, 2015

Posted by **Ellie** on Friday, March 29, 2013 at 5:34pm.

-5 -4 -3 -2 -1 0 1 2 3 4 5

Which of the expressions below represent the distance between -4 and 5 on the number line? [ ]= absolute value symbol

A. [-4+5]

B.[4-5]

C.[-4-5]

d.[-5-(-4)]

I believe it is D, since the absolute value of a neg. number is positive. When it is in parenthesis first you do the absolute value and the mult. by the -4 keeping the answer ranging from 5-4 on the number line.

Is this correct.

Thank you for your help

- math -
**Reiny**, Friday, March 29, 2013 at 6:30pmBy just counting you know the distance is 9

the only expression that will give you 9 is

|-4-5| = |-9| = 9

You have to do the stuff inside the absolute value first, then take the absolute value.

- math -
**Ellie**, Friday, March 29, 2013 at 7:42pmThank you, I wasn't thinking the distance, I was thinking the actual numbers of -4 and 5, you helped me see how this is done. Thanks a lot

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