Respuesta :
[tex]3x + 3 = x - 1 \\ 3x - x = - 1 - 3 \\ 2x = - 4 \\ x = \frac{ - 4}{2 } = - 2[/tex]
Take X=-2 into y
[tex]y = x - 1 \\ y = - 2 - 1 \\ y = - 3[/tex]
(x, y) =(-2,-3)
The coordinate (x,y)=(-2,-3).
We have given the following pair of equations
y = 3x + 3.....(1)
y = x − 1.....(2)
Here we use the substitution method
What substitution method?
The value of one variable from one equation is substituted in the other equation
So the given system of linear equation
We have substitute the value of y from equation 2 into the value of y in equation one
So we get
x − 1= 3x + 3
add like terms
x-3x=3+1
-2x=4
x=4/-2
x=-2
Plug x=-2 in equation 2 we get,
y = -2 − 1
y=-3
Therefore we get the coordinate (x,y)=(-2,-3).
To learn more about the substitution method visit:
https://brainly.com/question/22340165
