Find the value of q in the following system so that the solution to the system
is {(x, y) : x – 3y = 4}
x-3y=4
2x + qu=8

q=8/u -2x/u   that is the answer

The value of Q is -6 for the given equations.

Step-by-step explanation:

From the given question,  

X - 3y = 4 equation (1)

2X + Qy = 8 equation (2)

Multiply the entire equation (1) by 2 and equation (2) by -1

Therefore equation (1) and equation (2) becomes as follows

2X - 6y = 8 equation (1)

-2X - Qy = -8 equation (2)

Add equation 1 and 2 to find Q

-6Y - Qy = 0

-Qy = 6y

Cancelling both the in L.H.S and R.H.S, we get  

Q = -6

Thus we solved both the equations and found Q = -6.

answer: 1, 3 and 5 are correct

step-by-step explanation: