Can someone Please help me if you’re correct I’ll give Brainlist!

Solve x+3y=6 and 4x-6y=6 by elimination . show work !

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

(05.03 mc) part a: explain why the x-coordinates of the points where the graphs of the equations y = 4x and y = 2x−2 intersect are the solutions of the equation 4x = 2x−2. (4 points) part b: make tables to find the solution to 4x = 2x−2. take the integer values of x between −3 and 3. (4 points) part c: how can you solve the equation 4x = 2x−2 graphically? (2 points)