Yes, because only one line can go through two set points and because they have the same slope and the same x and y-intercepts they have two set points that they must both go through making them identical.
Answer:

Step-by-step explanation:
It's easy you are
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Answer:
6:8 and 9:12
Step-by-step explanation:
As long as you do the same thing to both parts of the ratio, it's the same ratio