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Which of the following systems of equations is an example of one where substitution is the best method?
A) 3x-5y=30
-4x + 6y = -12
B) 6x + 7y = -12
-4x + 9y = 16
C) y = 1/5x + 6
4x - 2y = -28
D) x = 6
y = 15

Respuesta :

Answer:

Step-by-step explanation:

Probably C cause y is already in substitution form if you know what I mean.

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