Question
Asked Oct 8, 2019
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y varies directly as the square of R. If y is 7 when R is 6, find y when R is 18.
a) Write the variation.
b) Find y when R is 18.
a) How are these two variables related?
O A.
k
У3-
B. y kR2
C. y kR
OD.
k
у-
b) The quantity indicated is
Click to select your answer(s).
O O
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y varies directly as the square of R. If y is 7 when R is 6, find y when R is 18. a) Write the variation. b) Find y when R is 18. a) How are these two variables related? O A. k У3- B. y kR2 C. y kR OD. k у- b) The quantity indicated is Click to select your answer(s). O O

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Expert Answer

Step 1

a) Given that y varies directly as the square of R

         Then it can be written as y is proportional to R2

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yo R

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Step 2

          Remove the proportionality sign

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Step 3

b) It is given that y is 7 when R is 6

Plug ...

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7=k(6) 7 k = 36

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Tagged in

Math

Algebra

Polynomials