1. Center (-4, -6); Point of Tangency (-4, -9)
Math Warm Up /4/13
Find the equation of the tangent line with the given center and pt of tangency.
Center (-4, -6); Point of Tangency (-4, -9)
Find the equation of the tangent line to the given circle at the point.
2. (𝑥+9) 2 + (𝑦+5) 2 =100; (-15, 3)

2. Conics: Ellipses Day 1
March 4th, 2013

3. What does an ellipse look like?
Examples of Ellipses in the real world?

4. Definitions Ellipse: Foci: Major Axis: Minor Axis: Vertices:
Co-vertices:

6. The standard form of the equation of an ellipse with center (h, k) is
(𝑥−ℎ) 2 𝑎 (𝑦−𝑘) 2 𝑏 2 =1

7. Length of the major axis is Length of the minor axis is
When 𝑎 2 > 𝑏 2
The major axis is
Length of the major axis is
Length of the minor axis is
Foci: 𝑐 2 = (h________, k)
Vertices: (h________, k)
Co-vertices: (h, k________)

8. When 𝑏 2 > 𝑎 2
The major axis is
Length of the major axis is
Length of the minor axis is
Foci: 𝑐 2 = (h, k________)
Vertices: (h, k________)
Co-vertices: (h________, k)

11. Assignment: pg. 637 # 19-21, odd