After Determining Whether the Variation Model Below Is of the Form

question 25

Multiple Choice

After determining whether the variation model below is of the form $y = k x$ or $y = \frac { k } { x }$ ,find the value of k.
$$\begin{array} { | c | c | c | c | c | c | } \hline x & 20 & 40 & 60 & 80 & 100 \\\hline y & \frac { 1 } { 30 } & \frac { 1 } { 60 } & \frac { 1 } { 90 } & \frac { 1 } { 120 } & \frac { 1 } { 150 } \\\hline\end{array}$$

• A) \(k = \frac { 1 } { 20 }\)
• B) \(k = \frac { 3 } { 2 }\)
• C) \(k = \frac { 5 } { 4 }\)
• D) \(k = \frac { 1 } { 10 }\)
• E) \(k = \frac { 2 } { 3 }\)

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