1. Warm Up
Determine for y2 + xy + 3x = 9

2. Determine y’ for the equation:

3. Let y3x + y2x2 = 6
Confirm that the point (2,1) is a point on the curve.
Find the slope of the curve at the point (2,1). Is the graph increasing or decreasing at that point? Explain.
Write an equation of the tangent line to the curve at the point (2,1)
Write an equation of the normal line to the curve at the point (2,1)

4. The second derivative is written
Example:
Determine for y2 + x2 = 25
Your Turn  x2 – y2 = 9