## Video Links 15-4

Videos:
This video provides a nice introduction to the conic sections  (time: 0:51)

Constructing a parabolic reflector using a satellite dish (time: 10:59)
See the whole entry

## Homework Hints 15-4

### Note: Homework Hints are given only for the Level 1 and Level 2 problems.

However, as you go through the book be sure you look at all the examples in the text. If you need hints for the Level 3 … See the whole entry

## Homework Hints 15-3

### Note: Homework Hints are given only for the Level 1 and Level 2 problems.

However, as you go through the book be sure you look at all the examples in the text. If you need hints for the Level 3 … See the whole entry

## 15.4 Outline

1. Introduction
1. definition
2. model
2. Geometric definition of conic sections
1. parabola
1. focus
2. directrix
3. axis
4. vertex
2. ellipse
1. foci
2. major axis
3. center
4. minor axis
3. circle
1. center
4. hyperbola
1. transverse axis
2. center
3. conjugate axis
3. Algebraic definition of conic sections
1. general form
1. first-degree equation
See the whole entry

## 15.3 Outline

1. Curves by plotting points
1. path of a cannonball
2. graph an equation
3. parabola
1. vertex
2. standard parabolas
2. Exponential curves
1. definition
2. general shape

## 15.3 Essential Ideas

This section graphs two important types of curves by plotting points; parabolas and exponentials. … See the whole entry