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F(x)=-1/4x-3, find the value of x for which f(x)=x
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F(x)=-1/4x-3, find the value of x for which f(x)=x

User Aaronstacy
by
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1 Answer

2 votes

Answer:

x = -2.4

Explanation:

f(x) = -1/4x -3

x = -1/4x -3 . . . . . the desired value of f(x)

5/4x = -3 . . . . . . . add 1/4x

x = -12/5 . . . . . . . multiply by 4/5, the inverse of 5/4

__

Check

-1/4(-2.4) -3 = 0.6 -3 = -2.4 = x . . . . answer checks OK

User Jhkuperus
by
5.7k points
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