# Slope and y-intercept

Identifying slope and y-intercept given equations (y = mx + b) or graphs.

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Positive, Negative or neither?

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Equations | Slope | Y-intercept | Type of Slope | Graphs |
---|---|---|---|---|

y = x | 1 | 0 | positive | |

y = -x | -1 | 0 | negative | |

y = -3x + 3 | -3 | 3 | negative | |

y = 3x - 3 | 3 | -3 | positive | |

y = 7 - 5x | -5 | 7 | negative | |

y = 7x + 5 | 7 | 5 | positive | |

y = 6 - 9x | -9 | 6 | negative | |

y = 9x - 6 | 9 | -6 | positive | |

12x + 4 = y | 12 | 4 | positive | |

-4 -12x = y | -12 | -4 | negative | |

y = 8 | 0 | 8 | zero | |

y = 5 | 0 | 5 | zero |