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Inverse Functions in Real Life

Real Life Sitautaion 3

A large group of students are asked to memorize 50 italian words. The group wants to know how many words are retained in a period of time.

f(x) = (6x+50)/x

Real Life Situations 2

Maggie Watts

Clarence Gilbert

Tierra Jones

Cost of Removing Pollutants

f(x) = 1/(x-10)

x/x does not equal 10

y/y does not equal 0

Real Life Situations 1

Real Life Situations 4

Do you know what a function is?

Rules & Relationships of an Inverse Function

Buying something that decreased after the first purchase.

If your first movie rental costs $4 and then every rental after that costs $2.

f(x) = 2x +2/x

  • A function is a relationship or expression involving one or more variables.

  • An inverse function is a function obtained by expressing the dependent variable of one function as the independent variable of another

Real Life Situations 5

  • The variables in an inverse function can represent a concept or item that can be represented by numbers.

A trucker drives 3 hours on a freeway at 60 miles per hour and then drove 20 miles in the city. The trucker's average speed was 57.14 miles per hour.

57.14 = (3 * 60 + 20)/(3 + x)

Real Life Sitautions 6

  • The rule of an inverse function consists of being not equal to a number.
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