Question

The point P(6, 1) lies on the curve y = √x - 5. If Q is the point (x, √x - 5), use a scientific calculator to find the slope of the secant line PQ (correct to six decimal places) for the following values of x. x=5.5

Answer 1

(6,1) to (5.5,[√(5.5)-5])

Answer 2

or is the -5 under the radical?

Answer 3

they both under the radical