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8 May, 23:07

Find the vertices and foci of the hyperbola with equation quantity x plus 4 squared divided by 9 minus the quantity of y minus 5 squared divided by 16 = 1

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  1. 8 May, 23:28
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    Vertices at (-7, 5) and (-1, 5).

    Foci at (-9, 5) and (1,5).

    Step-by-step explanation:

    (x + 4) ²/9 - (y - 5) ²/16 = 1

    The standard form for the equation of a hyperbola with centre (h, k) is

    (x - h²) / a² - (y - k) ²/b² = 1

    Your hyperbola opens left/right, because it is of the form x - y.

    Comparing terms, we find that

    h = - 4, k = 5, a = 3, y = 4

    In the general equation, the coordinates of the vertices are at (h ± a, k).

    Thus, the vertices of your parabola are at (-7, 5) and (-1, 5).

    The foci are at a distance c from the centre, with coordinates (h ± c, k), where c² = a² + b².

    c² = 9 + 16 = 25, so c = 5.

    The coordinates of the foci are (-9, 5) and (1, 5).

    The Figure below shows the graph of the hyperbola with its vertices and foci.
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