Question 1208166: The domain and range of a relation are the sets of all the x-coordinates and all the y-coordinates of ordered pairs respectively.
Given set A = {(2,3), (4,5),(7,6), (8,9),find the domain D and the range R.
I say the following:
D = {2, 4, 7, 8}
R = {3, 5, 6, 9}
You say?
Answer by ikleyn(52799)   (Show Source):
You can put this solution on YOUR website! .
The domain and range of a relation are the sets of all the x-coordinates and all the y-coordinates of ordered pairs respectively.
Given set A = {(2,3), (4,5),(7,6), (8,9),find the domain D and the range R.
I say the following:
D = {2, 4, 7, 8}
R = {3, 5, 6, 9}
You say?
~~~~~~~~~~~~~~~~~~~~~
You correctly determined the sets D (domain) and R (range).
Notice that in your post you opened the curved bracket { for set A,
but forgot to close it using closing bracket }.
In this connection, let me tell you one ancient story about accuracy of writing.
In one country, a ruler was presented with a petition for clemency from a man sentenced to death.
On the petition, the ruler wrote his decision/directive:
" To execute is impossible to pardon ",
but forgot to put a comma in the right place.
Those who were supposed to carry out the directive were perplexed - what should they do?
Since then, this story became an historical anecdote
to teach those who write inaccurately.
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