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# ch 2

### variation and graphs

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

Suppose z varies directly as the fourth power of w. if z = 80 when w = 2, find z when w = 3. | When w = 3, z = 405. |

Consider the equation s = 5d^2. How does the value of s change if d is doubled? | Multiplied by 4. |

write the variation equation m = kn^5 in words. | m varies directly as n to the fifth power. |

Complete with "inversely," "directly," or "neither." the time it takes to run a given distance varies ____ as the rate. | inversely. |

What is a inverse variation function? | A function with a formula of th form y = k/x^n, with k not equal to 0 and n > 0. |

given the equation y = k/x^3, suppose that y = 4 hen x = 3. find y when x = 5. | y = 108/125 |

consider y = 6/x. Find the rate of change from x = 1 to x = 2. | -3. |

Created by:
nikkrowley