The question isn’t clear, can you write it better so I can understand?
(7,-5) (-8,-6) (-2,1) (3,10)
The answer is 5:2.
If we take the y-value of 10 and the corresponding x-value of 4, that is 10:4. You can reduce that by diving both numbers by 2. You get 5:2.
Multiply and when u get yo answer, divide to get your answer