Lesson Plan : Coordinate Graphs with y-intercept

**Teacher Name: **
| Doug Haan |

**Grade:**
| Grade 9-10 |

**Subject:**
| Math |

**Topic: **
| graphing relations and functions |

**Content: **
| Using y-intercept to graph lines. If time permits, I will introduce "perpendicular" lines.
terms: y & x axis, ordered pairs, coordinate pairs, reciprocals(neg. & pos.), rise over run(remind that rise can be negative) |

**Goals: **
| Students will graph lines using the y-intercept formula. After graphing lines students will find ordered pairs which cross the y & x axis. |

**Objectives:**
| Have students demonstrate ability to find pertinent information needed to successfully graph a line from the y-intercept formula. Students will have the opportunity to use whiteboard to show work from previous days assignment. |

**Materials:**
| graphing activity from 2-23-09, worksheet 4-4, rulers, whiteboard |

**Introduction:**
| Ask students to describe the two ways we have used to graph lines. We first used table or charts. We then learned how to use the y-intercept method. Ask which method takes the least amount of time. |

**Development:**
| Model using whiteboard. Explain that in today's activity they will need to find the value for y if it isn't given. If the number in front of x is a whole number it needs to be thought of as a fraction. |

**Practice:**
| Complete first 2-3 problems from 4-4 on whiteboard. |

**Accommodations:**
| Shorten assignment if necessary. Work independently with students if necessary. |

**Checking For Understanding:**
| Ask students for questions or concerns with assignment. Ask students to use terms in a sentence. |

**Closure:**
| Let students know that they will have one more day working with graphing lines and then we will begin reviewing for our exam. |