Solve the system, using substitution. What is the x coordinate of the solution?

x = 2y - 2 and 3x - y = 14
A. 6
B. 4
C. 1
D. 0
E. no solution

Question

Solve the system, using substitution. What is the x coordinate of the solution?

x = 2y - 2 and 3x - y = 14
	A.	6
	B.	4
	C.	1
	D.	0
	E.	no solution

e.mccormick · Answer

Do you know what they mean by "Solve the system, using substitution"?

anonymous · Answer

no  im just trying to finish this assignment so i can go to sleep

e.mccormick · Answer

To substitute you solve for one of the variables.  Then you can plug that into the other equation.  I suggest the second equation and solving for y since you need to find x.

e.mccormick · Answer

Once you have y in terms of x in the second equation, you can replace the y in the first equation with all of that.

e.mccormick · Answer

I am saying you start with this: If you take $3x-y = 14$ and solve for $y=something$, what is that something?

anonymous · Answer

0

anonymous · Answer

The correct option is A.  6
By substituting this value of 'x' in first equation, we get y = 4, and then 
x=6 and y=4 satisfy the second equation