Graphic design is the art of combining text and images to aid communication. It involves problem solving through creativity and technical skills to translate a client's goals into a visual solution using elements like shape, color, imagery, typography and space. Effective poster design considers these principles by carefully planning layout and using memorable words, contrasting colors and impactful images to attract attention and leave an impression on viewers. The document provides a design brief and checklist for students to create a poster defining graphic design.