What is the domain and range of $y = 7$ $y=7$ ?

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Answer 1 · 2016-01-10T19:07:53

Domain = $RR$
Range = ${7}=[7,7]$

$y=7$ is a straight line with zero slope and y-intercept 7 as shown below.

Hence its domain (all allowed x-values) is all real numbers, and its range (all allowed y-values) is only 7.

graph{0x+7 [-11.92, 20.11, -3.69, 12.33]}

What is the domain and range of y=7y=7 y=7?