Determine whether each relation defines a function.

Determine whether each relation defines a function.

Determine whether each relation defines a function, and give the domain and range. {(1,1),(1,-1),(0,0),(2,4),(2,-4)}

Determine whether each relation defines a function, and give the domain and range. {(2,5),(3,7),(3,9),(5,11)}

Determine whether each relation defines a function, and give the domain and range.

Determine whether each relation defines a function, and give the domain and range.

Determine whether each relation defines a function, and give the domain and range.

Determine whether each relation defines a function, and give the domain and range. See Examples 1–4.