Find the domain and range.
- {(-7,7),(11,2),(12,-1),(12,1)}
A) Domain: {12,11,-7,-12} ; range: {-1,2,7,1}
B) Domain: {-1,2,7,1} ; range: {12,11,-7}
C) Domain: {12,11,-7} ; range: {-1,2,7,1}
D) Domain: {12,11,-7,22} ; range: {-1,2,7,1}

Question

Find the domain and range.
- {(-7,7),(11,2),(12,-1),(12,1)} 
A) Domain:  {12,11,-7,-12} ;  range:  {-1,2,7,1} 
B) Domain:  {-1,2,7,1} ; range:  {12,11,-7} 
C) Domain:  {12,11,-7} ;  range:  {-1,2,7,1} 
D) Domain:  {12,11,-7,22} ;  range:  {-1,2,7,1}

Quizplus · Accepted Answer

The domain of a set of ordered pairs is the set of all first elements, and the range is the set of all second elements. For the given set, the domain is {12, 11, -7} (note that 12 appears twice but is only counted once in the domain), and the range is {-1, 2, 7, 1}.

Find the Domain and Range