The table has two columns, one representing the number of muffins and one representing teaspoons of sugar. For one muffin, I need 5 teaspoons of sugar, for 2 muffins I need 2 × 5 = 10 teaspoons, for 3 muffins I need 3 × 5 = 15 teaspoons. I can keep going, but usually I only need about five pairs of values to observe a relation.