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kykrilka [37]
3 years ago
11

Given f(x) and g(x) = k⋅f(x), use the graph to determine the value of k.

Mathematics
1 answer:
Rasek [7]3 years ago
6 0

Answer: -3.

Step-by-step explanation:

We are given that : g(x)=kf(x)      (1)

It means that f(x) and g(x) are proportional.

[Equation of direct variation: y=kx , where k= proportionality constant.]

From the given graph ,

At x= -3 , f(x)=1 and g(x) =-3

Put value of x=-3 in (1) , we get

g(-3)=kf(-3)  

\Rightarrow\ -3=k(1)  [∵ f(x)=1 and g(x) =-3]

\Rightarrow\ -3=k

i.e. The value of k = -3

Hence, the correct answer is -3.

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