Question

Find the domain and range of the following:

y=IxI
y= - IxI
y= IxI-6
y=4 - IxI

Answer 1

y=|x|

domain= (-∞,+∞) range= [0,+∞)

y=-|x|

domain= (-∞,+∞) range= [0,-∞)

y=|x|-6

domain=(-∞,+∞) range= [-6,+∞)

y=4-|x|

domain= [-∞,+∞) range= [4,-∞)