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.