Let r be a binary relation defined on the set 50 1 2 4 166

Question

Question: 1. Let r be a binary relation defined on the set 50, 1, 2, 3, 4, 5, 66 by x py ↔ y = x + 2. Draw the associated directed graph.

2. Let r be a binary relation defined on the set 50, ±1, ±2, ±4, ±166 by p y ↔ y = x² . Draw the associated directed graph.

3. Describe a property of a directed graph whose adjacency matrix is symmetric.