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</h3><h3>4 and 3 are answers</h3>
Constant of proportionality is 4
equation: x/y = 4
explanation:
let's take 20 and 5 for example, if you divide 20 by 5, you will 4 of course. that's the proportionality for the first one. if you continue to divide x value by y value you will get 4. for the last two you would divide 28 by 4 and multiply 8 by 4.
Answer:3/5
Step-by-step explanation: and if you have trouble understanding slope again just do rise over run. Good luck :)