How do you find the domain and range of y = - sqrt(1 - x)?

1 Answer
Dreamer.N
May 12, 2018

Domainin(-∞,1]
Range in(-∞,0]

Explanation:

For the domain part, clearly the part inside the square root must be positive or zero that is
1-x >=0
x>=1
So domain in( -∞, 1]
Clearly as the value of x approaches -∞ that of y also approaches -∞
And if x=1, y=0
Therefore domainin(-∞,1]
Range in(-∞,0]

Hope it helps!!

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