What is the domain and range of #f(x)=1/2(x-2)#?

1 Answer
1s2s2p
Apr 13, 2018

#x inRR;f(x)in[-oo,oo]#

Explanation:

All values of #x# can be put into #f(x)# without getting more than 1 #y# value for 1 #x# value, or getting undefined.

Therefore #x in RR# (meaning all real numbers can be used in #f(x)#.

And since the graph is a straight line with a constant gradient, #f(x)# will gives all real values from negative infinity to positive infinity: #f(x)in[-oo,oo]# (meaning #f(x)# is in the range of and including negative infinity to positive infinity)

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