Use the listing method to represent the following set.

{x | x I, x ≥ 3}

{..., 0, 1, 2, 3}
{3, 4, 5, 6, ...}
{4, 5, 6, 7, ...}

Question

Use the listing method to represent the following set.

{x | x  I, x ≥ 3} 


{..., 0, 1, 2, 3}
{3, 4, 5, 6, ...}
{4, 5, 6, 7, ...}

luffingsails · Answer

Consider what it is asking for. It is asking for the set of X values that satisfy the equation x>= 3. Which one of the sets satisfies that?

luffingsails · Answer

You can try values... 

From the first set, let X=0. Is it true that 0>= 3?

thedj4jc · Answer

No, so that makes the first one out.

luffingsails · Answer

Right! Now look at the third set... Why is it wrong?

luffingsails · Answer

All of the X values satisfy the question but it is incorrect.

thedj4jc · Answer

It doesn't have 3, which makes it wrong because it's equal to 3 or is more than 3.

luffingsails · Answer

Bingo.

thedj4jc · Answer

Thank you!!!

luffingsails · Answer

Glad to help.