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# Yr 8 Linear Graphs

### Co-ordinates & Linear Graphs

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

Coordinates | Describe a position on the Cartesian Plane. |

Origin | Where the x and y axis intersect. The coordinates are (0,0) |

x- axis | x- axis is the horizontal axis |

y-axis | y-axis is the vertical axis |

Coordinates are written as | (x,y) |

Alphanumeric | grid references for a map Letter number |

Cartesian Plane | Describes the location on a plane by using two numbers as coordinates |

Quadrants | The axes dividing the Cartesian Plane into four sections |

Linear Pattern | Patterns forms a straight line |

Non Linear Pattern | Patterns do not form a straight line. |

Linear functions | Linear rules f(x)= |

Gradient | Measure of steepness |

Gradient formula is....... | m=rise/run |

Rise..... | Is the vertical distance between any two point on the line |

Run..... | Is the horizontal distance |

y-intercept | Is the y-intercept of the point where the graph crosses the y-axis. |

Rule for all Linear graphs is...... | y=mx + c |

In the rule for all Linear graphs the 'm' is y=mx + c | The 'm' is the gradient |

In the rule for all Linear graphs the 'c' is y=mx + c | The 'c' is the y-intercept |

In the rule for all Linear graphs the 'y & x' is y=mx + c | The 'y & x' are the variables |

When sketching linear graphs | Only two point are needed |

When two graphs intersect..... | The two equations share the same x and y coordinates. This point is the solution to the two equations. |