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# functions and graphs

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

The symbol f(x) is read ? | f of x |

Is x = c (is vertical line) a function? | No x = c is a graph of a vertical line and does not define a function. |

What is the square root of -√16 | -4 |

What is the square root of √-25 | √-.25 is not a real number |

for a function f(x) = - |x| can the value of f(x) be positive? | No. |

Is f(x) = √x a straight line? | No. |

The function (f(x) = x² + 4 crosses the y axis at ? | y = 4 |

Ax + By = C is referred to as the | Standard Form |

y = mx + c is referred to as the | Slope form |

If the gradient of a line id given by m=5, what is the gradient perpendicular to it? | - 1/5 |

Created by:
hivee