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# Math Unit_10

### Alegebra Concepts and Skills Vocabulary

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

Algebraic expression | An expression that contains a variable. For example, if Maria is 2 inches taller than Joe, and if the variable M represents Maria’s height, then the algebraic expression M – 2 represents Joe’s height. |

Circumference | The distance around a circle or a sphere; the perimeter of a circle. |

Diameter | A line segment that passes through the center of a circle or a sphere and has endpoints on the circle or sphere. The diameter of a circle is twice the length of the radius. |

Line graph | A graph in which data points are connected by line segments. |

Pan-balance | A tool used to weigh objects or compare their weights. |

Pi | The ratio of the circumference of a circle to its diameter. Pi is the same for every circle and is approximately 3.14. |

Predict | In mathematics, to say what will happen in the future based on experimental data or theoretical calculation. |

Radius | A line segment from the center of a circle (or sphere) to any point on the circle (or sphere). |

Rate | A comparison by division or two quantities with unlike units. For example, a speed such as 55 miles per hour is a rate that compares distance with time. |

Ratio | A comparison by division of two quantities with like, or the same, units. |

Variable | A letter or other symbol that represents a number. It can stand for one number or many different numbers. |

Created by:
mrsthompson