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Keagan
Mathematics
27 January, 19:19
Which function is the inverse of f (x) = - 5x-42
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Ximena Newman
27 January, 19:26
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f' (x) = - (x+42) / 5
Step-by-step explanation:
Rewrite f (x) as y:
y=-5x-42
Flip x and y and solve for y:
x=-5y-42
x+42=-5y
(x+42) / -5=y
So the inverse function is f' (x) = - (x+42) / 5 (note that f' means inverse)
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