How do you find the domain and range of $h(x) = 3x+9$ ?

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Answer 1 · 2018-06-07T15:52:45

Domain ${x|x " is "RR}$ or in interval notation $(-oo,oo)$

Range ${h(x)|h(x) " is "RR}$ or in interval notation $(-oo,oo)$

$h(x) = 3x+9$ is the equation of a line, the domain and range of all lines have no restrictions and include all real numbers.

Domain ${x|x " is "RR}$ or in interval notation $(-oo,oo)$

Range ${h(x)|h(x) " is "RR}$ or in interval notation $(-oo,oo)$

graph{3x+9 [-19.83, 20.17, -5.68, 14.32]}

How do you find the domain and range of h(x) = 3x+9 h(x) = 3x+9 ?