Question

What are the domain and the range of the relation?


{(−9, 7), (−4, 3), (−1, −6), (2, −8), (5, 12), (10, 11)}



Choose exactly two answers that are correct.



A.


domain: {−8, −6, 3, 7, 11, 12}


B.


domain: {−9, −4, −1, 2, 5, 10}


C.


range: {−9, −4, −1, 2, 5, 10}


D.


range: {−8, −6, 3, 7, 11, 12}

Answer 1

"The domain is a set containing all the x-coordinates.
The range is a set containing all the y-coordinates.
If the same x-coordinate or y-coordinate appears more than once, list it only once in the domain and range sets."

x-coordinates are first entries in ordered pair.
x-coordinate are second.

Answer 2

\( \{ (−9, 7), (−4, 3), (−1, −6), (2, −8), (5, 12), (10, 11) \} \)

Answer 3

y-coordinate are second***

Answer 4

domain=x values of all the points
range=y values of all the points

Answer 5

\( \{ (\color{red}{−9}, \color{green}{7}), (\color{red}{−4}, \color{green}{3}), (\color{red}{−1}, \color{green}{−6}), (\color{red}{2}, \color{green}{−8}), (\color{red}{5},\color{green}{ 12}), (\color{red}{10}, \color{green}{11}) \} \)

\( \{ \color{red}{x}, \color{green}{y} \} \)

\( \sf \color{red}{The~domain~is~ the ~set~of~x-coordinates.}\)

\( \sf \color{green}{The~range~is~ the ~set~of~y-coordinates.}\)