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8-17.

For each rule represented below, state the - and -intercepts, if possible.

  1. An upward parabola with a vertex at (1, comma negative 4) going through the points (negative 1, comma 0), (0, comma negative 3) (3, comma 0).

    The -intercept is where .
    The -intercept is where .

  1. The upper half of a sideways parabola opening to the right with a closed circle on (2, comma 0).

  • Look for the zeros in the table.

  1. The -intercept is and the -intercept is .