Home > Prealgebra > Absolute Value

How do you evaluate #q-absr# when q=3, r=-1?

Answer 1

Julian Avila

#2#

#q=3, r=-1# #q-|r|#

Substitute #3# instead of #q# and #-1# instead of #r#

#3-|-1|#

The negative of will become a positive one because it is inside the absolute

#3-1=2#

By signing up, you agree to our Terms of Service and Privacy Policy

Answer 2

Noah Archer

To evaluate ( |q - r| ) when ( q = 3 ) and ( r = -1 ), you substitute the given values into the expression and then compute the absolute value of the result.

( |3 - (-1)| = |3 + 1| = |4| = 4 )

Therefore, ( |q - r| = 4 ) when ( q = 3 ) and ( r = -1 ).

By signing up, you agree to our Terms of Service and Privacy Policy

Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.