Math Problem Statement

Graph the function y = |x + 5|.

Solution

The function shown in the image is y=x+5y = |x + 5|, which represents an absolute value function. Here's how to approach graphing it:

Steps to Graph y=x+5y = |x + 5|:

  1. Understand the absolute value transformation:

    • The basic form of an absolute value function is y=xy = |x|, which creates a "V"-shaped graph with the vertex at the origin (0, 0).
    • In y=x+5y = |x + 5|, the graph is shifted horizontally by 5 units to the left. This shift is due to the +5+5 inside the absolute value function. So the vertex of the graph will be at (5,0)(-5, 0).
  2. Identify key points:

    • Vertex: (5,0)(-5, 0).
    • The graph opens upwards, as the absolute value function always outputs positive values for yy.
  3. Shape of the graph:

    • For x<5x < -5, the function behaves like y=(x+5)y = -(x + 5) because the expression inside the absolute value is negative.
    • For x5x \geq -5, the function behaves like y=x+5y = x + 5.
  4. Draw key points:

    • Plot the vertex at (5,0)(-5, 0).
    • Plot additional points on either side of the vertex, such as (6,1)(-6, 1) and (4,1)(-4, 1), and connect them to form the "V" shape.
  5. Symmetry:

    • The graph is symmetric around the vertical line x=5x = -5.

Would you like to see a plotted graph of this function, or do you need more details on the steps?

Related Questions:

  1. How do you determine the domain and range of an absolute value function?
  2. What happens to the graph of y=x+5y = |x + 5| if the constant inside changes (e.g., x5|x - 5|)?
  3. How does multiplying an absolute value function by a constant (e.g., y=2x+5y = 2|x + 5|) affect its graph?
  4. What is the difference between horizontal and vertical shifts in absolute value functions?
  5. How can you graph the inverse of an absolute value function?

Tip: When graphing functions, it's useful to first identify any shifts (horizontal or vertical) from the base function, as this simplifies the graphing process.

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Math Problem Analysis

Mathematical Concepts

Algebra
Absolute Value Functions
Graphing Transformations

Formulas

y = |x + h| shifts the graph horizontally by h units

Theorems

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Suitable Grade Level

Grades 8-10