Question

What are the interval(s) on which the function Y =

Answer 1

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Answer 2

Answer:

Positive where x < -6 and x > 8.

Step-by-step explanation:

y = x^2 - 2x - 48

The graph of this is a parabola which opens upwards ( because the coefficient of x^2 ( = 1) is positive). So it will positive to the left and to the right of the points where  it passes through the x axis ( i e the zeros of the function).

x^2 - 2x - 48 =0

(x + 6)(x - 8) = 0

So the zeros are at x = (-6,0) and at (8, 0).

Therefore the intervals are  x < -6 and x > 8.