To solve the first equation in the system for [tex]\( y \)[/tex], follow these steps:
1. Write down the first equation:
[tex]\[
2x + y = 1
\][/tex]
2. Isolate [tex]\( y \)[/tex] on one side of the equation. To do this, subtract [tex]\( 2x \)[/tex] from both sides:
[tex]\[
y = 1 - 2x
\][/tex]
Therefore, the expression for [tex]\( y \)[/tex] in terms of [tex]\( x \)[/tex] is:
[tex]\[
y = 1 - 2x
\][/tex]
