Find the interval in which the function is positive x^2-x-6=y

(-INFINITY , -2) (3 , INFINITY)

Function is positive when above the x axis

Function is below the x axis between -2 and 3

9514 1404 393

  (-∞, -2) ∪ (3, ∞)

Step-by-step explanation:

The function can be factored as ...

  (x +2)(x -3) = y

The leading coefficient is positive, so the parabola opens upward. It will be positive up to the left-most zero, and positive again to the right of the right-most zero. That is, the function is positive everywhere outside the interval [-2, 3], where it is not.

The function is positive on (-∞, -2) ∪ (3, ∞).

answer: the dogs need to shift their focus to human scent.

its because the dogs being trained are for search and rescue thus they need to be able to track humans and their specific scent