asked 141k views
1 vote
What is the domain of
√(8-8x)
please use interval notation. Thanks.

asked
User Dutzu
by
7.6k points

2 Answers

2 votes

8-8x\geq0\\ 8x\leq8\\ x\leq1\\ x\in(-\infty,1]
answered
User Cooshal
by
7.8k points
6 votes
To find the domain of a function with a root, you set it ≥ 0
So, the equation will look like this:
8 - 8x ≥ 0
-8x ≥ 8
-8x ÷ 8 ≤ 8 ÷ -8
x ≤ 1
Therefore, the domain is
(-∞, 1]

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