Math Problem Statement

The graphs shown represent which of the following systems of equations?

Solution

The problem asks to determine which system of equations corresponds to the graph provided. Let's analyze it step-by-step.

  1. Identifying the lines: The graph shows two intersecting lines. Let's find the equations for each line by examining their slopes and y-intercepts.

    • First line: It passes through points (0,2)(0, 2) and (3,0)(3, 0). The slope mm is given by: m=y2y1x2x1=0230=23m = \frac{y_2 - y_1}{x_2 - x_1} = \frac{0 - 2}{3 - 0} = -\frac{2}{3} The equation of the line in slope-intercept form y=mx+by = mx + b is: y=23x+2y = -\frac{2}{3}x + 2 Multiply by 3 to eliminate the fraction: 3y=2x+6or2x+3y=63y = -2x + 6 \quad \text{or} \quad 2x + 3y = 6

    • Second line: It passes through points (0,2)(0, -2) and (6,0)(6, 0). The slope mm is: m=0(2)60=26=13m = \frac{0 - (-2)}{6 - 0} = \frac{2}{6} = \frac{1}{3} The equation of this line is: y=13x2y = \frac{1}{3}x - 2 Multiply by 3 to eliminate the fraction: 3y=x6orx3y=63y = x - 6 \quad \text{or} \quad x - 3y = 6

  2. Matching with given options: We now compare the simplified forms of the equations:

    • First line: 2x+3y=62x + 3y = 6
    • Second line: x3y=6x - 3y = 6

    None of the equations in the answer choices are presented exactly like this, but they could be manipulated. Looking at the choices closely, let's check option D:

    • x+y=2x + y = -2 (manipulate x3y=6x - 3y = 6) might correspond to a transformation in slope direction.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Slope-Intercept Form
Graphing

Formulas

Slope formula: m = (y2 - y1) / (x2 - x1)
Slope-intercept form: y = mx + b
Standard form conversion

Theorems

Equation of a line
Solving systems of linear equations

Suitable Grade Level

Grades 8-10