The quantities x and y are proportional. Find the constant of proportionality r in the equation y = rx
2 answers:
Answer:
r = 7
Step-by-step explanation:
To solve this, we can plug in a pair of x and y values and solve for r.
y = rx | Plug in a pair
42 = r*6 | Now divide both sides by 6
7 = r.
We can test this by plugging in r with a pair.
y = (7)x
77 = 7*11, 77 = 77, This equation is correct.
<h2>
Answer:</h2>
The constant of proportionality r in the equation is:
r = 7
<h2>
Step-by-step explanation:</h2>
We know that for the equation of the type:
The constant of proportionality is given by the equation:
i.e. it is the ratio of the output to the input values.
Here we have a table of values as follows:
x y
2 14
6 42
11 77
Hence, with the help of any one set of value we will get the value of r.
We take the set (2,14)
i.e.
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