Math Problem Statement

Use transformations of the absolute value​ function, f left parenthesis x right parenthesis equals StartAbsoluteValue x EndAbsoluteValue​, to graph the function h left parenthesis x right parenthesis equals StartAbsoluteValue x plus 3 EndAbsoluteValue plus 4. Question content area bottom left Part 1 What transformations are needed in order to obtain the graph of​ h(x) from the graph of​ f(x)? Select all that apply. A. Reflection about the​ y-axis B. Reflection about the​ x-axis C. Vertical shift D. Horizontal shift E. Horizontal​ stretch/shrink F. Vertical​ stretch/shrink Part 2 Use the graphing tool to graph the equation.

Solution

To determine the transformations needed to graph h(x)=x+3+4h(x) = |x+3| + 4 from f(x)=xf(x) = |x|, we analyze the equation step by step.


Part 1: Identifying Transformations

We start with the basic absolute value function f(x)=xf(x) = |x| and compare it to h(x)=x+3+4h(x) = |x+3| + 4.

  1. Inside the absolute value x+3|x+3|:

    • The +3+3 indicates a horizontal shift to the left by 3 units.
    • Remember: Adding a constant inside x+c|x + c| moves the graph left by cc.
  2. Outside the absolute value +4+4:

    • The +4+4 indicates a vertical shift upward by 4 units.
    • Adding a constant outside the function f(x)+cf(x) + c moves the graph up by cc.

Final Answer:

The transformations are:

  • C. Vertical shift (up 4 units)
  • D. Horizontal shift (left 3 units)

Part 2: Graphing the Function

To graph h(x)=x+3+4h(x) = |x+3| + 4:

  1. Start with the parent function f(x)=xf(x) = |x|, which has a "V" shape centered at (0,0)(0,0).
  2. Shift it left 3 units so the vertex moves to (3,0)(-3, 0).
  3. Shift it up 4 units so the vertex moves to (3,4)(-3, 4).
  4. The graph retains its "V" shape, opening upwards.

Instructions for Graphing Tool:

  1. Locate the new vertex at (3,4)(-3, 4).
  2. Use the standard slope of the absolute value function:
    • To the right, the slope is +1+1 (rise over run: 1 unit up for every 1 unit right).
    • To the left, the slope is 1-1 (rise over run: 1 unit up for every 1 unit left).
  3. Draw the "V" shape starting from (3,4)(-3, 4).

Recap:

  • Horizontal shift: left 3 units
  • Vertical shift: up 4 units
  • No reflection or stretch/shrink.

Do you need further clarification, or help using the graphing tool? Let me know!


Related Questions:

  1. What is the effect of a negative sign inside x|x|, such as x3|x-3|?
  2. How does the graph of y=x5y = |x| - 5 differ from y=xy = |x|?
  3. If h(x)=xh(x) = -|x|, what transformations occur?
  4. How would a vertical stretch affect the graph of y=xy = |x|?
  5. How can you write a transformation for a graph shifted right by 2 units and down by 3 units?

Tip:

Remember that transformations inside the absolute value x±c|x \pm c| affect the horizontal direction, while transformations outside affect the vertical direction.

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Math Problem Analysis

Mathematical Concepts

Absolute Value Functions
Transformations of Functions
Graphing Functions

Formulas

h(x) = |x + 3| + 4

Theorems

Transformation of functions: horizontal and vertical shifts

Suitable Grade Level

Grades 8-10