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

1 Answer
Bill Jorgensen
Jun 7, 2018

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

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

Explanation:

#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]}

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