What is the slope of the line shown below?

Negative 5 1/12 + negative 4 1/4 + 6 3/4

Does anyone know how to do geometryme with this problem

The domain of the following relation: r: {(3, 5), (8, 6), (2, 1), (8, 6)} is (1 point) no domain exists {1, 5, 6} {3, 8, 2, 8} {2, 3, 8}