Question

How do you find the domain and range of `sqrt1-sqrtx+7`?

Answer 1

Domain: `x >= 0`. In interval notation : `[0,oo)`
Range: `y <=8` In interval notation : `(-oo,8]`

Explanation:

`y= sqrt(1) - sqrt(x) +7 or y= 8-sqrt(x)`

Domain: Under root should be `>=0 :. x>= 0` ,

Domain: `x >= 0`. In interval notation : `[0,oo)`

Range: Max `y=8` , Minimum: `y = -oo`

Range: `y <=8` In interval notation : `(-oo,8]`

graph{8-x^0.5 [-160, 160, -80, 80]}