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need help with math ASAP Identify the following for the function: F(x)=log(x/8) X-intercept:______ Y-intercept:______ Domain:________ Range:_______ the other two questions are in pics down below. Please explain these questions i'm really confused. Thank you

need help with math ASAP Identify the following for the function: F(x)=log(x/8) X-example-1
need help with math ASAP Identify the following for the function: F(x)=log(x/8) X-example-1
need help with math ASAP Identify the following for the function: F(x)=log(x/8) X-example-2
User Titania
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1 Answer

5 votes
Eight answers for six points, eh ?
You're a tough businessman.

F(x)=log(x/8)

X-intercept . . . the point where the function crosses the x-axis (f(x) is zero).

log(x/8) = zero

10^log(x/8) = 10^0
\/ \/
(x/8) = 1

x = 8

y-intercept . . . the point where the function crosses the y-axis, ('x' is zero).

Y = log(0/8)

= log( 0 )

= negative infinity.

Domain (everything that 'x' can be) . . . all positive numbers.

Range (everything that f(x) can be) . . . - inf to + inf .
_______________________________________________________

First picture: f(x) = -3 / x⁴

To get an idea of what the asymptotes are, you have to draw
the graph of the function, either on paper or in your mind.
Think of what the function does, as 'x' drifts in from very
far away on the left, crosses over zero, and drifts far away
to the right.

'x' is very far away, negative . . . f(x) is positive, very small

'x' is negative 1 . . . . . f(x) = 3

'x' is close to zero, on the negative side . . . f(x) is positive, gigantic

'x' is close to zero, on the positive side . . . f(x) is negative, gigantic

'x' is very far away, positive . . . f(x) is negative, very small .

The horizontal asymptote is the x-axis.
The vertical asymptote is the y-axis.
_____________________________________________

Second picture: f(x)= 1/x ===> g(x)= -1/x + 3

Two transformations:

-- f(x) ==> -f(x) (reflect it across the x-axis)

-- -f(x) ==> -f(x)+3 (translate it UP by 3 units)


User Sumit Jha
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