answer pls and thx
What is the domain of the function: {(1, 2); (2, 4); (3, 6); (4, 8)}?

A.
{6, 8}

B.
{2, 4, 6, 8}

C.
{1, 2, 3, 4, 6, 8}

D.
{1, 2, 3, 4}

Question

answer pls and thx
What is the domain of the function: {(1, 2); (2, 4); (3, 6); (4, 8)}? 	
	
 
A.
	{6, 8}
	
 
B.
	{2, 4, 6, 8}
	
 
C.
	{1, 2, 3, 4, 6, 8}
	
 
D.
	{1, 2, 3, 4}

sparrow2 · Answer

it's d domain is the set of first numbers in (a,b)

ganeshie8 · Answer

$(x, y)$

domain = set of all $x$ coordinates

sparrow2 · Answer

why is present perfect present if it's about past action? :)

anonymous · Answer

The domain is the set of all first elements of ordered pairs (x-coordinates). The range is the set of all second elements of ordered pairs (y-coordinates). Domain and range can be seen clearly from a graph. Example 1: Example 2:

anonymous · Answer

thank you very much