How do you find the range of #f(x)=x+7#?

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Answer 1 · 2018-04-24T11:00:43

#f(x)=x+7#

Let #f(x) =y#

#y=x+7#

This is the equation of a straight line ;

So its range is all real numbers.

#R_f # # ϵ# #RR#

The graph of this function is given below :-

graph{x+7 [-13.3, 6.7, -0.45, 9.55]}

Answer 2 · 2018-04-24T11:05:12

#]-oo, oo[#

#f(x)=x+7#

represents a straight line

and non-horizontal straight lines extend from #-oo# to #oo#

so it's range will be #]-oo, oo[#

graph{x+7 [-32.47, 32.5, -16.25, 16.24]}