Question

Which of the following sets would have a graph with an open circle on 5 and a ray pointing left on the number line?

a){x | x R, x ≤ 5}
b){x | x R, x > 5}
c){x | x R, x < 5}

Answer 1

An open circle on the number means that that number is NOT included in your set. If it's pointing to the left, that means less than 5. So, your answer is c)