Question

I dont understand this

Answer 1

Answer:

$x\geq 2$

Step-by-step explanation:

we have

$y=\sqrt{2x-4}$

we know that

The radicand must be greater than or equal to zero

so

$2x-4\geq 0$

Solve for x

Adds 4 both sides

$2x-4+4\geq 0+4$

$2x\geq 4$

Divide by 2 both sides

$x\geq 2$

so

The domain is the interval for x ----> [2,∞)

All real numbers greater than or equal to 2