Question

Multiply the 2nd equation by -4.What value belongs in the green box?-2x + 4y = 15-2x + 4y = 15(3x + y = 2) multiply by -4 -12x + -4y = [?]B. 2A. 8D. -2C. -8

Answer 1

From the system of equations given

The second equation

`3x+y=2`

Multiplying the equation by -4, it will give

`\begin{gathered} 3x+y=2\text{ }*(-4) \\ -12x-4y=-8 \end{gathered}`

The missing number is -8

Hence, the answer is option C