Final answer:
To solve for x and y in the given congruent triangles ABC and DEF, we set the corresponding sides equal to each other and solve the resulting equations simultaneously.
Step-by-step explanation:
To solve for x and y in the given congruent triangles ABC and DEF, we can set the corresponding sides equal to each other.
AB = EF: 9x - 10 = 5y - 9
BC = DF: 3x - 17 = 2y + 15
Solving these two equations simultaneously will give the values of x and y. After solving, we find that x = 6 and y = 2. So the correct answer is A) X = 6, y = 2.