Answered

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Let f= {(5,5),(8,-8),(-8,5)}. Find (a) f(5) and (b) f(-8).

Sagot :

The given function f(x) is

[tex]f(x)=\lbrace(5,5),(8,-8),(-8,5)\rbrace[/tex]

We need to find

a) f(5)

It means finding the value of the y-coordinate in the ordered pair that has x-coordinate = 5

Look at the function

At x = 5, y = 5 (1st orderd pair), then

f(5) = 5

b) f(-8)

It means finding the value of the y-coordinate in the ordered pair that has x-coordinate = -8

Look at the function

At x = -8, y = 5, (last ordered pair), then

f(-8) = 5

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