Find Secant Line

**ToXic01** · September 20th 2010, 01:06 PM

If the point P(4,2) likes on the curve y=radical x. If Q is the point (x,radicalx), use you calculator for find the slope of the secant line PQ for the value x=3.99

What do I do?

**Soroban** · September 20th 2010, 01:17 PM

Hello, ToXic01!

$\text{The point }P(4,2)\text{ lies on the curve }y\:=\:\sqrt{x}$

$\text{If }Q\text{ is the point }(x,\sqrt{x})\text{, use your calculator to find}$

$\text{the slope of the secant line }PQ\text{ for the value }x=3.99$

Did you read the problem at all?

You are asked to fnd the slope of the line through $P(4,2)$ and $Q(3.99,\sqrt{3.99})$

How hard is that?

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