# How do you find the slope of the secant lines of #f (x) = x ^2 - 4x + 5 # at (1, 2) and (5, 10)?

##### 1 Answer

May 13, 2018

Slope of secant is

#### Explanation:

First let us confirm, whether

As

and as

Now slope of line joining

and hence slope of secant is

graph{(x^2-4x+5-y)((x-1)^2+(y-2)^2-0.01)((x-5)^2+(y-10)^2-0.01)(y-2x)=0 [-7.13, 12.87, 0.92, 10.92]}