Question

Find the solution to the system. Write your solution as an ordered pair (x,y)

with no spaces, no solution, or infinitely many. x-3y=7 and 3x-9y=21*

Answer 1

Infinitely many

Explanation:

If we multiply the equation x-3y=7 by 3, we get 3x-9y=21, which is also the second equation. That means the two lines are on top of each other, meaning infinite many solutions.