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What is the value of k in the function f(x)=112-kx if f(-3)=121?

User Nezir
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1 Answer

5 votes

Answer:

k = 3

Explanation:

f(x) = 112 - kx ------------------(I)

f(-3) = 121

In equation (I) substitute x = -3

112 - k*(-3) = 121

112 + 3k = 121

3k = 121 - 112

3k = 9

k = 9/3

k = 3

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