Answer:
sometimes
Step-by-step explanation:
In system A, the first equation multiply by 4
8x - 4y = 12 (1st)
3x + 4y = 10 (2nd)
--------------------add
11x = 22
So answer is B.
Vertical angles are congruent due to the fact that they intersect. If they did not, they would in fact be parallel. (last section)
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