Which equation has (2, -1) as a solution?
1 answer:
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<h2>Hello!</h2>
The answer is:
The x-coordinate of the solution to the system of equations is:
We can solve the problem writing both equations as a system of equations.
So, we are given the equations:
Then, solving by reduction we have:
Multiplying the first equation by 2 in order to reduce the variable "x", we have:
Now, substituting "y" into the first equation, to isolate "x" we have:
Hence we have that the x-coordinate of the solution to the system of equations is
Have a nice day!