Question

Part B

Open the graphing tool, and compare the functions using the sliders. What can be said about the domain of
y = sqare root if x - k and the domain of y = square root of x + k?

Answer 1

In y=
`√(x-k)` , the domain depends on k . As you slide k , you move the left bound of the domain interval. In y=
`√(x+k)` , the domain is fixed and always starts at 0 .

Explanation: