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Which equation is the inverse of the function f(x)=5x+2? y = 5x - 2 y = 2/5x + 1 y = 1/5x - 1/2 y = 1/5x - 2/5
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4 votes
Which equation is the inverse of the function f(x)=5x+2?

y = 5x - 2

y = 2/5x + 1

y = 1/5x - 1/2

y = 1/5x - 2/5

User Soleshoe
by
7.2k points

1 Answer

4 votes
The inverse is y=1/5x-2/5
—————————————————————————

f(x)=5x+2

Replace f(x) with y

y=5x+2

Interchange the variables.

x=5y+2

Solve for y

y=-2/5+x/5 which is the same.d y=1/5x-2/5
User Andrey Patseiko
by
6.7k points
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