Answer:
x=-3, y=-6. (-3, -6).
Step-by-step explanation:
-4x+y=6
-5x-y=21
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-9x=27
x=27/-9
x=-3
-5(-3)-y=21
15-y=21
y=15-21
y=-6
Answer:
The triangles are not congruent.
A because its twice bigger than the real one
Your reasoning and your answer were both correct. Discuss with the teacher. ("Discuss". DON'T fight.)