Question

Which of the following inequalities represents a number y that is less than 4 but greater than –1

Answer 1

This is a conjunction, where y is sitting in between 2 numbers. Y is less than 4, so all numbers less than 4 are included, but at the same time it has to be greater than -1. So y is then between -1 and +4 on a number line. Putting it into an inequality, it's -1<y<4