Question

The point P(4,2) lies on the curve y=√x. If Q is the point (x, √x), write an expression that gives the slope of the secant line.

Answer 1

∆f/∆x= f(x)-f(x)/x-a=> Vx-2/x-4

Answer 2

something like that.... I guess...

Answer 3

\[dy/dx=1/2\sqrt{x}\]

Answer 4

dy/dx is the slope