Math Problem Statement

Find the graph of the linear function y = x - 2.

Solution

The equation given is y=x2y = x - 2. This is in slope-intercept form, y=mx+by = mx + b, where mm is the slope, and bb is the y-intercept.

Key Steps to Identify the Correct Graph:

  1. Y-Intercept (bb):

    • The y-intercept is 2-2. This means the graph crosses the y-axis at (0,2)(0, -2).
  2. Slope (mm):

    • The slope is 11, which means the line rises 1 unit for every 1 unit it moves to the right.
  3. Choose the Correct Graph:

    • Check which graph starts at (0,2)(0, -2) and has a slope of 11. This means a diagonal line that goes upward to the right.

Based on the two options provided:

  • The left graph shows a slope of 1 and intercepts the y-axis at 2-2. Therefore, the left graph is the correct representation of y=x2y = x - 2.

Would you like more details or have further questions about this? Here are some related questions:

  1. What is the general approach to identifying graphs of linear equations?
  2. How can the slope-intercept form help in sketching graphs manually?
  3. What are the common mistakes when interpreting the slope and y-intercept?
  4. How can we verify if a point lies on the line of a given equation?
  5. How would the graph change if the slope or intercept is modified?

Tip: Always check the y-intercept first and then verify the slope when matching graphs to equations.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Graphing Linear Functions
Slope-Intercept Form

Formulas

Slope-Intercept Form: y = mx + b

Theorems

Slope-Intercept Theorem

Suitable Grade Level

Grades 6-8