Select all pairs of ratios that form a proportion. 2/3, 10/5
3/4, 30/40
36/30, 18/15
4/5, 28/35

Please help.

the direct variation says that:

then the equation is of the form is given by:

            where k is the constant variation.

from the given table:

consider any value of x and m(x)=y

x = 2 and m(x)=y = 3

substitute these value in [1]; we have;

divide both sides by 2 we get;

⇒

check:

put x = -1 and m(x) = -1.5

substitute in the equation:

-1.5 = -1.5                   true

therefore, the function m(x) represents a direct variation

graph of this function as shown below:

3.how is solving radical equations different than solving linear equations?

step-by-step explanation:

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answer: d.) the total number of protons and neutrons is 15

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the real question is why is this guys last name heavyfoot

step-by-step explanation: