To find the answer, see if the point is going to the left or to the right. If it is going to the left, it is less than. If it is going to the right it is greater than. Next find if the point is closed (shaded in) or open (not shaded in). If it is closed, it is equal to, if it is open, it is not equal to. Ex: Closed to the right - Greater than or equal to.
1) x is less than -7
2) x is less than or equal to 4.5
3) x is greater than -5
4) x is greater than 1.5