Question

find the value of Q in the following system so that the solution to the system is (3,2) 4x-5y=2 and 6x+7y=Q

Answer 1

Q = 32

Explanation:

We will check whether the given pair x = 3 and y = 2 is the solution of the first equation.

4(3) - 5(2) = 12 - 10 = 2 CORRECT

Put x = 3 and y = 2 to the equation 6x + 7y = Q:

Q = 6(3) + 7(2)

Q = 18 + 14

Q = 32