Question

How do you find the domain and range and is it a function given points `{(-1.1,-2), (-0.4,-1), (-0.1,-1)}`?

Answer 1

The domain is `{-1.1,-0.4,-0.1}`
The range is `{-2,-1}`
These points do represent a function.

Explanation:

The domain is the set of all possible inputs for a function. The range is the set of all possible outputs of a function. When given an ordered pair `(x,y)`, the `x`-coordinate is the input and the `y`-coordinate is the output.

A set of points represents a function if each input (`x`-value) is associated with only one output (`y`-value), which is the case for the given set of points.