Question

What are the domain and range of the function f(x)= Squrt x-7+9

Answer 1

Answer:

• domain: x ≥ 7
• range: f(x) ≥ 9

Step-by-step explanation:

The domain is the set of values of x for which the function is defined. Those are the values of x that make the square root argument non-negative:

  x -7 ≥ 0

  x ≥ 7

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Since the square root cannot be negative, the sum of it and 9 cannot be less than 9. The range is ...

  f(x) ≥ 9