Question

Implied domain of the equation f(x)=[tex]\sqrt{x+9}-4

Answer 1

The stuff under the square root cannot be negative.

x+9 ≥ 0

x+9-9 ≥ 0-9

x ≥ -9 is the domain as an inequality

This converts to the interval notation [-9, ∞)

Use a square bracket to include the endpoint -9.