Question

what is the domain?

y = √3x + 3

x ≤ – 1
x > 1
x ≥ –1

Answer 1

Can there be a square root of a negative number?

Answer 2

\[\sqrt{3x+3}\] so
\[3x+3\geq 0\]
\[3x\geq -3\]
\[x\geq -1\]

Answer 3

\[\sqrt{-1}=i\]

Answer 4

\[\sqrt{-3}=3i\]