Question

What is the solution of the systems of equations? Y=3x-4 and -3y=-9x+12

Answer 1

Answer: it has infinite solutions.

Explanation:

`y=3x-4\\-3y=-9x+12`

Plug y in the second equation.

`-3y=-9x+12\\-3(3x-4)=-9x+12\\-9x+12=-9x+12\\-9x+9x=12-12\\0=0`