A solution of y < -3 is -4
How to find the solutions
The inequality y < -3 represents all real numbers y that are less than -3.
Therefore, any real number that is strictly less than -3 is a solution to this inequality.
Some of the values includes
y = -4 is a solution because -4 is less than -3.
y = -5 is a solution because -5 is less than -3.
y = -3.5 is a solution because -3.5 is less than -3.
The shaded part of the attached graph shows the solution