2x-y =3
multiply by 4
8x - 4y = 12
3x +4y = 10 (unchanged equation)
------------------add
11x = 22
answer is A. the first.
first equation multiplied by 4 then sum to get 11x = 22
16x - 3x = x is the Given,
16 = 4x is the Addition Property of Equality,
and
4 = x is the Division Property of Equality!
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If you meant -3x then the answer is (2,12)
Answer:
Step-by-step explanation:
Amplitude=2
period=2π
