Question

Solve the following system of equations for x. Write your answer as a point (x,y). Show all your work! 2x - y = 4. Y - x =4

Answer 1

(8, 12)

Explanation:

You want to solve the system ...

• 2x -y = 4
• y -x = 4

Solution

Add the two equations:

(2x -y) +(y -x) = (4) +(4)

x = 8 . . . . . . . . . . . . simplify

y = 4 +x . . . . . . rearrange the second equation

y = 4 +8 = 12

The solution is (x, y) = (8, 12).