Question

Solve the system by substitution.
y = x + 6
y = 3x

Answer 1

• x = 3
• y = 9

Explanation:

• y = x + 6
• y = 3x

Bring one of the equations into the other one:

3x = x + 6

3x - x = 6

2x = 6

x= 3

Then, bring the found value to find the value other variable:

y = 3x = 3(3) = 9

Answer 2

y=9

x=3

Explanation: