Final answer:
Without context on the relationship between angles x and y, such as complementary or supplementary, the correct equation cannot be determined. Typical angle relationships are complementary angles summing to 90° or supplementary angles summing to 180°.
Step-by-step explanation:
The question asks which equation represents the relationship between the measures of m∠x and m∠y. Without additional context such as whether the angles are complementary, supplementary, or neither, it is not possible to definitively determine the relationship. The provided information does not pertain directly to typical angle relationships in geometry, such as complementary angles summing to 90° or supplementary angles summing to 180°. However, for educational purposes and in general geometric contexts, if angles x and y are complementary, option 2) m∠x + m∠y = 90° would be correct. If they are supplementary, then option 4) m∠x + m∠y = 180° is correct. It is essential to have the context of how the angles relate to each other to answer this question correctly.