How do you evaluate abs(x+y) when x=3, y=-5?

1 Answer
Jim G.
Nov 24, 2016

2

Explanation:

The color(blue)"absolute value" denoted by the ' bars' can only ever have a color(red)"positive value"

This is because it gives a measure of how far a number is from zero irrespective of it's sign.

That is |4|=|-4|=4 since 4 and - 4 are both 4 units from zero.

Here |x+y|=|3+(-5)|=|3-5|=|-2|=2

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