Question

Find the value of Q in the following system so that the solution to the system is {(x,y): x-3y=4} ?

Answer 1

`Q = 2`

Explanation:

just multiply the entire first function by 2

therefore,
`(x - 3y = 4) * 2`
=

therefore,
`= 2x - 6y = 8`
=

this is the same as the second function and in it, the coefficient of x is 2, therefore `Q = 2`