Question

substitute the value x =-1 into the first equation and solve for y.

Answer 1

Given

x = -1 ,

y = 2x - 1 ..................(1)

-2x - y = 5.....................(2)

Find

The value of y

Explanation

given x = -1

substitute the value of x in equation (1)

$\begin{gathered} y=2x-1 \\ y=2(-1)-1 \\ y=-2-1 \\ y=-3 \end{gathered}$

Final Answer

Therefore , the value of y is -3.

so , the correct option is 3.