What is the function 1) -3 < _ x < 1 2) -3 < x < _ 1 3) -4 < y < _ 2 4) -4 < _ y < 2

As the point (-3,-4) has an open circle on it , So we do not include this point in our answers .

while the other point (1,2) has a closed circle on it , so we include it in our answer .

So the two answers should be

and

i.e. 2) and 3) are the correct answers