Math  /  Algebra

Question1. Identify the parent function. Then describe the transformations that produce the graph of ff. a. f(x)=x+9f(x)=|x+9| b. f(x)=5x38f(x)=5 x^{3}-8

Studdy Solution

STEP 1

What is this asking? We need to find the simplest version of each function and then describe how to change it to get the more complicated version. Watch out! Remember the order of transformations matters!
Inside changes happen *before* outside changes.

STEP 2

1. Analyze Function (a)
2. Analyze Function (b)

STEP 3

Alright, let's tackle function (a): f(x)=x+9f(x) = |x + 9|.
First, we **identify the parent function**.
It's the absolute value function, f(x)=xf(x) = |x|!
This is our starting point.

STEP 4

Now, let's **describe the transformation**.
We see a +9+9 *inside* the absolute value.
Inside changes are horizontal shifts.
Adding 99 shifts the graph **9 units to the left**!
So, we take our parent function, slide it left 99 units, and boom, we've got f(x)=x+9f(x) = |x + 9|!

STEP 5

Now for function (b): f(x)=5x38f(x) = 5x^3 - 8.
Let's **identify the parent function**!
This time, it's the cubic function, f(x)=x3f(x) = x^3.

STEP 6

Time to **describe the transformations**.
We have a 55 multiplying the x3x^3 and a 8-8 outside.
The 55 *stretches* the graph vertically by a **factor of 5**.
Think of it like pulling the graph upwards, making it taller and skinnier!

STEP 7

Finally, the 8-8 outside the cubic term shifts the entire graph **down 8 units**.
So, we stretch it vertically by a factor of 55 and then shift it down 88 units, and we've got our transformed function f(x)=5x38f(x) = 5x^3 - 8!

STEP 8

a. Parent function: f(x)=xf(x) = |x|.
Transformation: Horizontal shift **9 units to the left**. b. Parent function: f(x)=x3f(x) = x^3.
Transformations: Vertical stretch by a **factor of 5**, followed by a vertical shift **8 units down**.

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