your answer is 2 1/3 or 7/3
It should be a right angle (90º).
1/5 because there are 7 numbers divisible by 5 from 1 to 35. 5,10, 15, 20,25,30,35, and out of those there are 35 cards, 7 out of 35 or 7/5 can be simplified to 1/5.
The rule would be ~y=4x+3~
Hope this helps
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