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This is really confusing please help

This is really confusing please help-example-1
User Aracelis
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1 Answer

21 votes
21 votes

Explanation:

you don't know the meaning of


y = {h}^( - 1) (x)

it means it is the inverse function to h(x).

the regular function assigns an y value to every x value.

the inverse function now turns this around and finds for a given y value the original x value.

so, the inverse function is easier understood, if we would write it


x = {h}^( - 1) (y)

but just for formal reasons, we don't define functions this way but do it like above (x is the input, y the output value).

just, the understanding of an inverse function is a I just described it.

that means for the points, simply x and y values trade places.

the point (1, 9) turns into (9, 1) (it means 1 was the original x value when the original function delivered 9 a result).

and the point (3, 2) turns into (2, 3).

so, move the 2 green dots to these coordinates.

User JC Lee
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