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?
In y=[tex]\sqrt{x-k}[/tex] , the domain depends on k . As you slide k , you move the left bound of the domain interval. In y=[tex]\sqrt{x+k}[/tex] , the domain is fixed and always starts at 0 .
