25,144 views
45 votes
45 votes
4x - 2y = 8Solve for yy = 4x + 8y = -2x + 4y = 2x - 4y = -x

User Tim Cooley
by
2.7k points

1 Answer

16 votes
16 votes

This question has to do with the change in the subject of the formula.

So we will proceed thus:


\begin{gathered} 4x-2y=8 \\ \text{Making y the subject of formula will give:} \\ \end{gathered}
\begin{gathered} 4x-8=2y \\ \text{Divide both sides by 2} \\ (4x-8)/(2)=(2y)/(2) \\ 2x-4=y \end{gathered}

The correct answer, therefore, is the third option:


y=2x-4

User Matias Andina
by
2.7k points
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