Answered

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Answer the question for me please and explain how you got the answer

Answer The Question For Me Please And Explain How You Got The Answer class=

Sagot :

Given:

a.) y = 2.5 when x = 9

Let's find the constant of variation (k).

For us to be able to determine which of the given choices is the answer, let's plugin x = 2.5 and y = 9 in each of them to see if it will make the equation correct.

CHOICE A: k = 22.5 ; y = 22.5x

2.5 = 22.5(9)

2.5 ≠ 202.5 (False)

Choice A is not the answer

CHOICE B: k = 3.6 ; xy = 3.6

(2.5)(9) = 3.6

22.5 ≠ 3.6 (False)

Choice B is not the answer

CHOICE C: k = 3.6 ; y = 3.6/x

2.5 = 3.6/9

2.5 ≠ 0.4 (False)

Choice C is not the answer

CHOICE D: k = 22.5 ; xy = 22.5

(2.5)(9) = 22.5

22.5 = 22.5 (True)

Choice D is the answer

Therefore, the answer is CHOICE D.

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