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# Algebra II Chapter 1

### Terms and definitions from Chapter 1

Question | Answer |
---|---|

dependent variable | The output of a function; a variable whose value depends on the input value. |

domain | The set of all possible inputs of a relation or function. |

function | A relation in which every input is paired with exactly one output. |

independent variable | The input of a function; a variable whose value determines the value of the output, or dependent variable. |

parent function | The simplest function with the defining characteristics of the family. |

principal root | The positive root of a number, indicated by the radical sign. |

radicand | The expression under a radical sign. |

reflection | A transformation that reflects, or “flips,” a graph or figure across a line, called the line of reflection, such that each reflected point is the same distance from the line of reflection but is on the opposite side of the line. |

relation | A set of ordered pairs. |

scientific notation | A method of writing very large or very small numbers, by using powers of 10. |

set | A collection of items called elements. |

set-builder notation | A notation for a set that uses a rule to describe the properties of the elements of the set. |

subset | A set that is contained entirely within another set. Set B is a subset of set A if every element of B is contained in A. |

transformation | A change in the position, size, or shape of a figure or graph |

translation | A transformation that shifts or slides every point of a figure or graph the same distance in the same direction. |

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wlabarg