Question

select the correct answer.
(-1,1)
(0,-1)
(5,-11)
(10,-21)
what is the domain of the set of ordered pairs above?
a. {-1, 0, 5, 10}
b. {-1, 1}
c. {-1, 10}
d. {1, -1, -11, -21}

Explanation:

The domain of a set of ordered pairs \((x,y)\) is the set of all \(x\)-values (the first elements of each ordered pair). The given ordered pairs are \((-1,1)\), \((0, - 1)\), \((5,-11)\), \((10,-21)\). So the \(x\)-values are \(-1\), \(0\), \(5\), \(10\).

Answer:

A. \(\{-1, 0, 5, 10\}\)