Question #41fff

1 Answer
Timber Lin
Jan 11, 2018

#x<=4#

Explanation:

the only way an x-value input will not produce a real y-value is if the #(4-x)# inside the radical is negative. this means the domain of the function is where #4-x# is positive or zero, meaning #4-x>=0#

simplify:
#4>=x#
#x<=4#

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