Answer:
Linear functions have a constant rate. l, domain of all real numbers, and doesn't have a vertex.
Step-by-step explanation:
linear functions are a straight line. domain numbers can be but not limited to: -999 or 999, positive and negative numbers are included but not those with π or √ do not count because they are not real numbers. It doesn't have a vertex because it is a straight line, so therefore there is no vertex.
