Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Normal Size Small Size show me how

# O'Keefe, A Chapter 2

### Lesson 2.4: Variables and Equations

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

Define equation. | A mathematic statement that contains an equal sign. |

Define open sentence. | An equation that contains a variable(s). |

Name the three types of equations. | Equations are either true, false, or open. |

How do you check a solution? | A number is a solution of an equation if the number makes the equation true. |

What does the word "is" mean in equations? | The word "is" means equal to. |

Give an example of an open sentence. (Open equation) | Twenty minus x is three 20-x=3 Open |

Give an example of a true equation. | 3 plus 5 is 8 3+5=8 True |

Give an example of a false equation. | Nine times the opposite of five is forty-five 9(-5)=45 False |

Tell whether this equation is true, false, or an open sentence. | Seven less than the product of three and a number is equal to 4 ____ 3x-7=4 Open |

State and complete an equation and tell whether it is true, false, or an open sentence. | -6k+8=3 -6(-4)+8=3 24+8=3 32=3 False |

Created by:
okeefeaustin