Question

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Answer 1

The graph has a y-intercept of 2 and is shifted to the right 6 from the parent function.

The parent function, y=√x, looks like a parabola laid on its side.  We generally only consider the positive square root unless told otherwise.  Since we have √(x-6) instead of just √x, the graph is shifted to the right 6 units.  The +2 at the end of the equation shifts the graph up 2.