Need help with range:

The range of the relation below is
x / y
------
-3 / 8
2 / 6
5 / 4
8 / 4

I thought range was subtracting the highest and lowest number, but these are my answers:

{−3, 2, 5, 8}

{4, 6, 8}

{8, 6, 4, 4}

No range exists.

Question

Need help with range:

The range of the relation below is
x  /  y
------
-3 / 8
  2 / 6
  5 / 4
  8 / 4

I thought range was subtracting the highest and lowest number, but these are my answers:

{−3, 2, 5, 8}

{4, 6, 8}

{8, 6, 4, 4}

No range exists.

ganeshie8 · Answer

this is a relation, so the range is the set of all "y" values

anonymous · Answer

oh okay, but when i do that, the answer is 2, so would it be 'no range exists'?

anonymous · Answer

or would it be all of the y values?

ganeshie8 · Answer

just list all y values :

{8, 6, 4, 4}

remove redundant stuff

{8, 6, 4}

anonymous · Answer

oh, so the answer would be {4, 6, 8} then since we removed the other 4?

ganeshie8 · Answer

yep

anonymous · Answer

oh okay, thanks!

ganeshie8 · Answer

yw!