8. (x - l)2 + (y - 3)2 - 4 center ( , ) radius 9. To find the center and radius of x2 + 6x + y2 - 4y - -4, we must the square. Work as follows (Remember: Take the coefficient of x or y and square.) (x2 + 6x + ) + (y2 - 4y + ) - -4 + + Now factor. ( )2 + ( )2anbsp;...

Title | : | Student's study guide, Algebra for college students, second edition, Lial/Miller/Hornsby |

Author | : | Margaret L. Lial, Jane Brandsma |

Publisher | : | - 1992 |

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