Math Problem Statement

Which function best represents the relationship shown in the graph?

Solution

To determine which function best represents the graph, we need to analyze the line’s slope and y-intercept.

Step 1: Identify the Slope

The slope of the line mm is the rise over the run. We can choose two points on the line:

  • Point 1: (6,6)(-6, -6)
  • Point 2: (6,6)(6, 6)

The slope mm is given by:

m=y2y1x2x1=6(6)6(6)=1212=1m = \frac{y_2 - y_1}{x_2 - x_1} = \frac{6 - (-6)}{6 - (-6)} = \frac{12}{12} = 1

So, the slope of the line is m=1m = 1.

Step 2: Identify the Y-Intercept

The line crosses the y-axis at y=0y = 0. This means the y-intercept b=0b = 0.

Step 3: Equation of the Line

Using the slope-intercept form of a line y=mx+by = mx + b, where m=1m = 1 and b=0b = 0, the equation of the line is:

y=1x+0or simplyy=xy = 1x + 0 \quad \text{or simply} \quad y = x

Step 4: Compare with the Given Options

None of the options exactly match y=xy = x. However, this suggests that none of the provided functions match the graph perfectly. Based on the available options, there might be a confusion, but let's check them:

  • A: y=32x4y = \frac{3}{2}x - 4 — the slope is 32\frac{3}{2}, which is not correct.
  • B: y=23x+6y = \frac{2}{3}x + 6 — slope is 23\frac{2}{3}, incorrect.
  • C: y=32x+6y = \frac{3}{2}x + 6 — incorrect slope.
  • D: y=23x4y = \frac{2}{3}x - 4 — incorrect slope.

None of these match the slope of the line. The graph should correspond to a line with a slope of 1 and a y-intercept of 0, which is not represented in the answer choices. You may need to check if the question options have any error or consider y=xy = x as the best-fit answer.

Let me know if you'd like more details or have any further questions. Here's a set of related questions:

  1. How do you determine the slope from two points?
  2. What does the y-intercept of a line represent?
  3. How does the slope-intercept form of a line work?
  4. Can you compare the differences between positive and negative slopes in graphs?
  5. What are the characteristics of lines with a slope of 1?

Tip: Always verify the slope and y-intercept by testing a few points from the graph!

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Slope-Intercept Form

Formulas

y = mx + b (Slope-Intercept Form)
Slope formula: m = (y2 - y1) / (x2 - x1)

Theorems

Linear function theorem

Suitable Grade Level

Grades 8-10