A piano teacher tracks the number of audience members for a recital to plan the best size auditorium to reserve for future recitals. The model = 4.1x + 8.6 explains the relationship between x, the number of students performing, and , the predicted number of audience members. Identify and interpret the slope. The slope is 8.6. For every additional audience member, there is a predicted increase of 8.6 performers. The slope is 4.1. For every additional audience member, there is a predicted increase of 4.1 performers. The slope is 8.6. For every additional performer, there is a predicted increase of 8.6 audience members. The slope is 4.1. For every additional performer, there is a predicted increase of 4.1 audience members