Math Problem Statement

Graph of y = |x + 1| - 2

Solution

To graph the equation y=x+12y = |x + 1| - 2, we can break down the transformations of the basic absolute value function y=xy = |x|.

Steps:

  1. Basic Absolute Value Function: Start with y=xy = |x|, which is a V-shaped graph that has its vertex at the origin (0,0)(0, 0) and opens upwards.

  2. Horizontal Shift: The expression x+1|x + 1| shifts the graph of y=xy = |x| 1 unit to the left. This means the new vertex is at (1,0)(-1, 0).

  3. Vertical Shift: The subtraction of 2 from the function, i.e., x+12|x + 1| - 2, shifts the graph 2 units down. This moves the vertex to (1,2)(-1, -2).

Key Points:

  • The vertex of the graph is at (1,2)(-1, -2).
  • The graph still maintains its V-shape, with the slope of the arms being 1 (the left arm slopes down at 1-1 and the right arm slopes up at +1+1).

Sketch of the Graph:

  • Vertex: (1,2)(-1, -2)
  • Left side: The slope is 1-1 (goes down towards left).
  • Right side: The slope is +1+1 (goes up towards right).

This is the graph of y=x+12y = |x + 1| - 2, a V-shape shifted left and down from the basic y=xy = |x| graph.

Would you like me to plot this graph or provide more details?


Here are 5 questions related to the topic:

  1. What is the domain and range of y=x+12y = |x + 1| - 2?
  2. How would the graph change if we had y=x+1+2y = |x + 1| + 2?
  3. What would happen to the graph if the equation was y=x+12y = -|x + 1| - 2?
  4. How do you find the intercepts of y=x+12y = |x + 1| - 2?
  5. How do you solve the equation x+12=0|x + 1| - 2 = 0 for xx?

Tip: Horizontal shifts affect the xx-coordinates, while vertical shifts affect the yy-coordinates of the graph.

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Math Problem Analysis

Mathematical Concepts

Algebra
Absolute Value Functions
Transformations of Functions

Formulas

y = |x + h| + k (transformation of absolute value function)

Theorems

Transformations of Functions: Horizontal and Vertical Shifts

Suitable Grade Level

Grades 8-10