Math  /  Algebra

Questiong(x)g(x) is a growth \square function. g(x)=12(6)x+7g(x)=\frac{1}{2}(6)^{x}+7 g(x)g(x) has a yy - intercept of (0(0, \square 7.5 g(x)g(x) has a xx-intercept of there are no xx-intercepts \square , 0). g(x)g(x) has an asymptote of y=7y=7 \square

Studdy Solution

STEP 1

What is this asking? We're given a function g(x)g(x) and need to figure out if it's a growth or decay function, find its y-intercept, see if it has an x-intercept, and identify its asymptote! Watch out! Remember, exponential functions can be tricky with their intercepts and asymptotes, so let's be extra careful!

STEP 2

1. Determine Growth or Decay
2. Find the Y-Intercept
3. Find the X-Intercept
4. Identify the Asymptote

STEP 3

Alright, we've got our function g(x)=12(6)x+7g(x) = \frac{1}{2}(6)^{x} + 7.
The key part here is the **base** of the exponential term, which is **6**.

STEP 4

Since **6** is greater than **1**, this tells us g(x)g(x) is a **growth** function!
It's going to get bigger and bigger as xx increases.
Woohoo!

STEP 5

To find the y-intercept, we need to set xx to **0** and see what g(x)g(x) becomes.
It's like seeing where our function starts on the y-axis!

STEP 6

g(0)=12(6)0+7g(0) = \frac{1}{2}(6)^{0} + 7

STEP 7

Remember, *anything* raised to the power of **0** is **1**, so 60=16^0 = 1.

STEP 8

g(0)=121+7g(0) = \frac{1}{2} \cdot 1 + 7 g(0)=12+7g(0) = \frac{1}{2} + 7 g(0)=12+142g(0) = \frac{1}{2} + \frac{14}{2}g(0)=152g(0) = \frac{15}{2}g(0)=7.5g(0) = 7.5

STEP 9

So, our y-intercept is (0,7.5)(0, 7.5).
Boom!

STEP 10

Now, for the x-intercept, we set g(x)g(x) to **0** and solve for xx.
This is where our function crosses the x-axis.

STEP 11

0=12(6)x+70 = \frac{1}{2}(6)^{x} + 7

STEP 12

Let's isolate the exponential term: 7=12(6)x-7 = \frac{1}{2}(6)^{x} 14=(6)x-14 = (6)^{x}

STEP 13

Uh oh!
We have a problem.
An exponential term with a **positive base** (like **6**) can *never* be equal to a **negative number** (like **-14**).
This means there's **no x-intercept**!
Our function will never touch the x-axis.

STEP 14

The asymptote is like a line that our function gets really, really close to but never actually touches.
For exponential functions in the form g(x)=abx+cg(x) = a \cdot b^x + c, the asymptote is y=cy = c.

STEP 15

In our case, c=7c = 7, so our asymptote is y=7y = 7.
That means our function will get closer and closer to the line y=7y = 7 as xx gets smaller and smaller, but it will never actually reach it!

STEP 16

g(x)g(x) is a **growth** function.
The y-intercept is (0,7.5)(0, 7.5).
There are **no x-intercepts**.
The asymptote is y=7y = 7.

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