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# Transformations

Term | Definition |
---|---|

Reflection over x-axis | change the sign of y |

Reflection over y-axis | change the sign of x |

Reflection over y=x | switch the numbers |

Reflection over the origin | Change the sign of both numbers |

<2, -4> | slide the figure right 2 and down 4 |

<-3, 0> | slide the figure left 3 and stay |

(x,y)--->(x+7, y-1) | slide the figure right 7 and down 1 |

Rotate 90 degrees from quadrant 3 | land in quadrant 4 and switch numbers |

A 180 degree rotation is the same as _____ | reflection over the origin |

Equation for a horizontal line is _________. | y = a number |

Equation for a vertical line is __________. | x = a number |

What kind of line is x = 10? | vertical |

What kind of line is y= -6 | horizontal |

Rotate 90 degrees clockwise from quadrant 2 | land in quadrant 1 and switch numbers |

Isometry | a transformation in which the pre-image and image are congruent |

What is a pre-image? | the original figure |

Which figure is the image? | the figure resulting from a transformation |

How can you tell the pre-image from the image on a graph? | The image will be named with primes |

Created by:
smartin614