Inverse Variation

Quiz by Tasnim Aina

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5 questions
• Q1

The intensity I of light produced by a light source varies inversely as the square of the distance d from the source is written as

d2=kI

d2 = $\frac\left\{k\right\}\left\{I\right\}$

I=$\frac\left\{k\right\}\left\{^\left\{d^2\right\}\right\}$

I = kd2

30s
• Q2

In inverse variation, variable y increases when the variable x decreases at the same rate, and vice versa.

true
false
True or False
30s
• Q3

Given that y varies inversely with x, if x =7 and y = 4, what is y when x = 2?

28

-14

14

12

30s
• Q4

Which is an example of inverse variation?

$y=13x$

$y=\frac\left\{13\right\}\left\{x\right\}$

$x=\frac\left\{y\right\}\left\{13\right\}$

$y=\frac\left\{x\right\}\left\{13\right\}$

30s
• Q5

Which variation statement represents the  given table of values?

𝑥 varies directly as 𝑦 where 12 is the constant of variation

𝑦 varies directly as 𝑥 where 12 is the constant of variation

𝑦 varies inversely as 𝑥 where 12 is the constant of variation

𝑥 varies inversely as 𝑦 where 12 is the constant of variation

30s

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