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# SHMS 8th Math Vocab4

### SHMS 8th Grade Math Vocab 4

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

Intersecting Lines | Two lines that cross each other. Lines intersect at one point unless the lines are parallel or fall directly on top of each other (in which case they are the same line and are called coincidental). |

Origin | The point of intersection of the vertical and horizontal axes of a Cartesian plane. The coordinates are (0, 0). |

Proportional Relationships | A relationship between two equal ratios. |

Slope | This is the steepness of a line and can be found by determining the ratio of the rise to the run between two points. Slope can be found directly when a linear equation is in the form y = mx + b and is represented by the letter m. |

Unit Rate | A comparison of two measurements in which the second term has a value of 1. They are used to compare values. For example, the unit rate would help compare the costs of items in a grocery store. |

Clustering | The grouping of a data set into subsets (clusters), so that the data in each subset share some common trait. |

Outlier | An element of a data set that distinctly stands out from the rest of the data. |

Linear | A relationship or function that can be represented by a straight line. |

Non-linear | A relationship which does not create a straight line. |

Rate of Change | The ratio of the change in the output value and change in the input value of a function. This is also known as slope. |

Bivariate Data | Two different response variables that are from the same population. |

System of Linear Equations | Two or more equations that together define a relationship between variables. There may be one solution, no solution, or infinite solutions. |

Simultaneous Equations | Another name for a system of Linear Equations. |