Answer:
The answer is (-1,2).
Step-by-step explanation:
Try determining it by making up specific examples.
You might try x+2y = 3 (1,2,3 is an arithmetic progression with a
difference of 1).
The 2nd equation might be 5x+7y = 9. Now solve this system of equations using elimination or substitution method. Try this with a few different specific examples, just to convince yourself.
