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Mathematics 18 Online
iuytyuioiuytyuiop:

math problem

iuytyuioiuytyuiop:

1 attachment
iuytyuioiuytyuiop:

@AZ

AZ:

f(g(3)) so first let's find g(3) when the x-value is 3, what is the y-value of the equation for g(x)

iuytyuioiuytyuiop:

5

AZ:

good, so that means g(3) = 5 so we have \( f( \color{red}{g(3)}) = f(\color{red}{5}) = ?\)

AZ:

so now when the x-value is 5, what is the y-value on the graph of f(x) ?

iuytyuioiuytyuiop:

im not sure

AZ:

look on the x-axis where is 5? and then go down until you hit the blue f(x) line what is the y-value at that point?

iuytyuioiuytyuiop:

-1

AZ:

so that means f(5) = -1 so if you write it all as one f(g(3)) = -1

iuytyuioiuytyuiop:

its -1?

AZ:

yes

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