How do you find the domain and range of #y = -2x +3#?

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Answer 1 · 2017-05-22T01:37:37

Domain: #(-oo,+oo)#
Range: #(-oo,+oo)#

#y=-2x+3#

#y# is defined #forall x in RR#

Hence the domain of #y# is #(-oo,+oo)#

#y# has no upper or lower bounds.

Hence the range of #y# is also #(-oo,+oo)#

These can be seen from the graph of #y# below.

graph{-x+3 [-118.6, 118.6, -59.3, 59.4]}