Math Problem Statement

Which is the graph of y = x + 2?

Solution

To determine which graph represents the equation y=x+2y = x + 2, let's analyze the key features of this line:

  1. Slope: The equation y=x+2y = x + 2 has a slope of 1, meaning it rises one unit vertically for each unit it moves horizontally. This creates a line that goes diagonally upward to the right at a 45-degree angle.

  2. Y-intercept: The y-intercept is 2, indicating that the line crosses the y-axis at the point (0, 2).

Now let's examine each option:

  • Option A: This line passes through the y-axis at y=2y = 2 and has a positive slope of 1. It matches the equation y=x+2y = x + 2.
  • Option B: This line passes through a different y-intercept, so it does not match.
  • Option C: This line passes through a different y-intercept as well.
  • Option D: This line has a different slope or intercept.

Answer: The correct option is A.

Would you like more details or have questions on this topic?


Additional Related Questions:

  1. How do we determine the slope of a line from an equation?
  2. How would the graph change if the equation were y=x2y = x - 2?
  3. What does a positive slope indicate about the direction of a line?
  4. How can we recognize parallel lines by comparing their equations?
  5. What are the steps to find the x-intercept of a line?

Tip: Remember, the y-intercept is the value of yy when x=0x = 0.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Graphing Lines
Slope-Intercept Form

Formulas

y = mx + b

Theorems

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Suitable Grade Level

Grades 6-8