Math Problem Statement

Which graph represents the equation y - 6 = -(x - 4)?

Solution

The equation given is y6=(x4)y - 6 = -(x - 4), which can be rearranged into slope-intercept form to better analyze which graph represents it.

Step 1: Simplify the given equation

Start with the original equation: y6=(x4)y - 6 = -(x - 4)

Distribute the negative sign on the right-hand side: y6=x+4y - 6 = -x + 4

Now, add 6 to both sides to isolate yy: y=x+4+6y = -x + 4 + 6

Simplify: y=x+10y = -x + 10

Step 2: Identify the slope and intercept

  • The slope (mm) is 1-1, meaning the line slopes downward at a 45° angle.
  • The y-intercept (bb) is 10, meaning the line crosses the y-axis at (0,10)(0, 10).

Step 3: Match with the graph

We are looking for a graph with a line that:

  • Starts at (0,10)(0, 10) on the y-axis.
  • Has a slope of 1-1, meaning for every 1 unit increase in xx, the value of yy decreases by 1 unit.

Looking at the graph you provided, the top graph seems to match the description:

  • It crosses the y-axis at (0,10)(0, 10).
  • The line slopes downward with a slope of 1-1.

Thus, the top graph represents the equation y=x+10y = -x + 10.

Would you like more details on this process? Here are some related questions:

  1. What is the process of converting an equation to slope-intercept form?
  2. How do you calculate the slope from a graph?
  3. Can you explain how transformations (translations and reflections) affect the graph of a line?
  4. How do negative slopes differ from positive slopes in visual terms?
  5. How does the y-intercept influence where a line crosses the y-axis?

Tip: Always try to simplify an equation to its slope-intercept form y=mx+by = mx + b for easier graphing!

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Graphing

Formulas

Slope-intercept form y = mx + b

Theorems

Graphing linear equations

Suitable Grade Level

Grades 7-10