Question

Find the value of Q in the following system so that the solution to the system is ....

Answer 1

We are given

first equation:

$x-3y=4$

second equation:

$Qx-6y=8$

Our second equation will be same as first equation if we multiply 2 in first equation

so, we will multiply 2 in first equation

$2*x-2*3y=2*4$

$2x-6y=8$

now, we can see that this equation is same as second equation

so, we can compare both

and we get

$Q=2$..............Answer