Question 1:
For this case we have we have the following system of equations:
We substitute the first equation in the second one:
We look for the value of "y":
Finally, the solution of the system is:
ANswer:
Question 2:
For this case we have we have the following system of equations:
We manipulate the first equation:
We substitute in the second equation:
We look for the value of "y":
Finally, the solution of the system is:
ANswer:
Question 3:
For this case we have we have the following system of equations:
Equating the equations:
We look for the value of "y":
Finally, the solution of the system is:
ANswer: