Question

How do you determine how many solutions `x=2` and `2x+y=1` has?

Answer 1

`color(pink)(x = 2, y = -3`

Explanation:

`x = 2`

`2x+ y = 1`

Substituting the value of x in the above equation,

`4 + y = 1` or `y = 1 - 4 = -3`