Question

I need help with this I don’t understand the video explaining it can you help?

Answer 1

The domain of a function is the set of x-values for which the function is defined.

The range of a function is the set of all values that the function takes (y-values)

For the given function:

Domain: -1 ≤ x <2

The circle in point (2,0) indicates that the function is not defined in x=2, then the inequality sing is <

Interval notation domain:
`\lbrack-1,2)`

Range: 0 < y ≤ 4

Interval notation Range:
`(0,4\rbrack`