Slope of a Secant Line:
y
a line that intersects the function through
two given points
through
20
15
Slope of a Secant Line:
10
5
y
x
­5
­4
­3
­2
­1
0
1
2
3
4
­5
­10
­15
x
­20
Sep 20­2:18 PM
Sep 20­2:18 PM
If , find the slope of the tangent line to at the point Slope of a Tangent Line:
a line that intersects the function at the
given point - it may cross through the function
at another point
y
x
Sep 20­2:18 PM
Sep 20­3:24 PM
1