How do you find the range of y = 4x - x^2; given Domain = {-1, -2, 0}?

1 Answer
Oct 9, 2017

y in {-5,-12,0}

Explanation:

The domain is x in {-1,-2,0}
This means that the value of x can ONLY be those numbers. (Because of this { } bracket)

So, when we put x=-1 in y then y=-5

when we put x=-2 in y then y=-12

when we put x=0 in y then y=0

Therefore the range is y in {-12,-5,0}