The sine of ∠I is represented by the ratio 63:65
First simplify it so it would become -1 x^2 over 6 x^5
then you need to simplify the x's so do 5-3 so the final answer is -1 over 6 x^3
Basically here all you want to do it substitute the values x=1 and x=2 for the given function. Use your slope formula
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Do same for x=3 and x=4
You next divide plug in values in to this expression:

How to simplify:
9+(-2) would be just 9 - 2 = 7 -2 would 5
The answer is 5
Hope this helps
Zero is an integer but not a natural (counting) number.
Most square roots of integers are not rational numbers.
√2, √3, √5, √6, √7, and (pi) are real, irrational numbers.