X + 7y = 0 2x − 8y = 22
x − y = 3 7x − y = −3
−9 + 5y = −4x −11x = −20 + 9y
y = 4x − 9 y = x − 3
Tell which method you used to solve each system and why you chose that method.

To describe a sequence of transformations that maps triangle abc onto triangle a"b"c", a student starts with a reflection over the x-axis.how should the student complete the sequence of transformations to map triangle abc onto triangle a"b"c"? plz

Are the corresponding angles congruent? explain why or why not.

What are two numbers that add up to -9 and multiply to -10 best answer gets branliest and 100 extra points