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3 years ago

PLEASE HELP ME WITH THIS MATHS QUESTIONS!!! WILL GIVE BRAINLIEST!!!

Mathematics

1 answer:

vampirchik [111]3 years ago

3 0

Answer:

a) y = (x+2)/3

b) 5

Step-by-step explanation:

f^-1(x) means "f inverse of x". To find the inverse, we simply:

a ) f(x) = 3x -2

y = 3x - 2 --> because f(x) is the same thing as y

x = 3y - 2 --> to find the inverse, we simply just switch x and y

x + 2 = 3y

y = (x+2)/3

b) f^-1(13)

f^-1(13) = [((13) + 2)/3]

f^-1(13) = (15)/3

f^-1(13) = 5

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2 years ago

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3 years ago

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