Question

For \(R=\{(1,4),(1,5),(2,4),(2,5),(3,4),(3,5),(4,5)\}\), what is the domain?

Options

• \(\{1,2,3,4,5\}\)

• \(\{1,4,5\}\)

• \(\{1,2,3,4\}\)

• \(\{4,5\}\)

Answer 1

The domain is formed from the first components of all ordered pairs in \(R\). These first components are \(1\), \(2\), \(3\), and \(4\).