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Nostrana [21]
3 years ago
6

Name 3 of the 4 features listed below for the function g (x) = log2 (x + 4) - 1 and include a description of how you found those

answers using complete sentences. 1) Vertical Asymptote 2) Domain 3) X and Y Intercepts 4) Transformations compared to its parent function f (x) = log2 x
Mathematics
1 answer:
givi [52]3 years ago
4 0

(1) Vertical asymptote: x=-4

(2) Domain: x>-4

(3) X intercept: (-2,0) and Y intercept : (0,1)

(4) The function g(x) is shifted 4 units to the left and shifted 1 unit down.

Explanation:

The parent function is f(x)=\log _{2} x

The transformed function is g(x)=\log _{2}(x+4)-1

(1) Vertical asymptote:

The vertical asymptote of a function can be determined by equating

x+4=0

Thus, x=-4

The vertical asymptote is x=-4

(2) Domain:

The domain of a function is the set of all independent x-values.

x+4>0

Thus, x>-4

The domain of a function is x>-4

(3) X and Y intercepts:

To determine the x intercept, let us substitute y=0 in g(x)=\log _{2}(x+4)-1

\begin{equation}\begin{aligned}\log _{2}(x+4)-1 &=0 \\\log _{2}(x+4) &=1 \\x+4 &=2^{1} \\x &=-2\end{aligned}

Thus, the x intercept is (-2,0)

To determine the y intercept, let us substitute x=0 in g(x)=\log _{2}(x+4)-1

\begin{equation}\begin{aligned}y &=\log _{2}(0+4)-1 \\&=\log _{2} 4-1 \\&=2-1 \\&=1\end{aligned}

Thus, the y intercept is (0,1)

(4) To determine the transformation:

The transformed function g(x)=\log _{2}(x+4)-1 is shifted 4 units to the left and shifted 1 unit downwards.

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Answer:

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(B) 13

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