Question

I need help on question 8.The solution of the system below is:x + y = 6y = 2x

Answer 1

we have the system

x + y = 6 -----> equation 1

y = 2x -----> equation 2

Solve the system

substitute equation 2 in equation 1

x+(2x)=6

solve for x

3x=6

x=2

Find out the value of y

y=2x

y=2(2)=4

therefore

The solution of the system is (2,4)