SOLUTION: f(x)=-7x+1 it wants to know the inverse how do i figure out if it is a one-to-one equation?

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Question 447048: f(x)=-7x+1
it wants to know the inverse
how do i figure out if it is a one-to-one equation?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
f(x)=-7x+1
it wants to know the inverse
how do i figure out if it is a one-to-one equation?
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It's a line so it's one-to-one.
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Find inverse:
1st: Interchange x and y:
x = -7y + 1
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2nd: Solve for "y":
-7y = x-1
y = (-1/7)x+(1/7)
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Cheers,
Stan H.