Given that x = |y|, express in terms of y.

[tdotgirl]

how do i express x = |y| in terms of y?

is it y = +/-x?

 

[soroban]

Re: x = |y|, y = ?

Hello, tdotgirl!

How do i express $\displaystyle \,x \,= \,|y|$ in terms of $\displaystyle y$ ?

You are correct . . .

$\displaystyle x\,=\,|y|$ means: $\displaystyle \,\begin{Bmatrix}x\:=\:y \\ x\:=\:-y\end{Bmatrix}$ which means: \(\displaystyle \,\begin{Bmatrix}y \:=\:x \\ y\:=\:-x\end{Bmatrix}\;\;\Rightarrow\;\;\L\fbox{y\:=\:\pm x}\)


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