What is the major disadvantage to solving a system by graphing

There are two major disadvantages of solving a system by graphing:

Data Misinterpretation:

Some students jump to conclusions and interpret graphs inaccurately, resulting in incorrect answers to applied math problems.

Complacency:

Students who rely solely on technology-generated math graphs for classroom learning, such as those produced by graphing calculators and computer programs, might become complacent. Due to the computerized graphs student might not develop their own graphing skills.