1. Parametric Equations
Section 1.5

2. Defining a function Parametrically
 Another way to define functions or
relations is to define both elements of the
ordered pair (x, y) in terms of another
variable t, called a parameter.

3. Example


4. On the ti-84

5. Inverese Functions


6. Inverse Functions
Horizontal Line Test

7. Inverse Functions
The Inverse Reflection Principle
 The points (a, b) and (b, a) in the
coordinate plane are symmetric with
respect to the line y=x.
 The points (a, b) and (b, a) are reflections
of each other across the line y=x.

8. Inverse Functions
