Question

The domain of r:(3,-2)(1,2)(-1,-4)(-1,2)

Answer 1

domain {-1,1.3}

Explanation:

The domain is the input values, or in this case the first or x values

domain {3,1,-1,-1}

We do not put the same value twice

domain {3,1,-1}

We like to put them in numerical order

domain {-1,1.3}