Math Problem Statement

2x+3y=6

Solution

The given equation 2x+3y=62x + 3y = 6 is a linear equation in two variables (xx and yy). Let’s analyze and solve for different scenarios:

1. Solving for yy in terms of xx:

2x+3y=62x + 3y = 6 Subtract 2x2x from both sides: 3y=62x3y = 6 - 2x Divide through by 3: y=62x3ory=22x3y = \frac{6 - 2x}{3} \quad \text{or} \quad y = 2 - \frac{2x}{3}

2. Solving for xx in terms of yy:

2x+3y=62x + 3y = 6 Subtract 3y3y from both sides: 2x=63y2x = 6 - 3y Divide through by 2: x=63y2orx=33y2x = \frac{6 - 3y}{2} \quad \text{or} \quad x = 3 - \frac{3y}{2}

3. Finding intercepts:

  • xx-intercept: Set y=0y = 0: 2x+3(0)=6    x=32x + 3(0) = 6 \implies x = 3 So, the xx-intercept is (3,0)(3, 0).

  • yy-intercept: Set x=0x = 0: 2(0)+3y=6    y=22(0) + 3y = 6 \implies y = 2 So, the yy-intercept is (0,2)(0, 2).

4. Graph of the Equation:

The equation represents a straight line. Using the intercepts (3,0)(3, 0) and (0,2)(0, 2), we can draw the line on a Cartesian plane.

5. General Observations:

This equation represents a family of solutions that can be written as (x,y)(x, y) pairs satisfying the equation. For example:

  • If x=0x = 0, y=2y = 2.
  • If x=3x = 3, y=0y = 0.
  • If x=1x = 1, substitute into y=22x3y = 2 - \frac{2x}{3}: y=22(1)3=223=43y = 2 - \frac{2(1)}{3} = 2 - \frac{2}{3} = \frac{4}{3} So, (1,43)(1, \frac{4}{3}) is also a solution.

Do you want further details, such as graphing this equation or exploring specific solutions?


Expanding Your Understanding:

  1. What are the solutions if this equation is paired with xy=1x - y = 1?
  2. How does this equation change if transformed into slope-intercept form (y=mx+by = mx + b)?
  3. What is the slope of this line, and what does it represent geometrically?
  4. How do you test whether a point (e.g., (1,1)(1, 1)) satisfies this equation?
  5. How would this equation change if it were written in standard form Ax+By=CAx + By = C with A>0A > 0?

Tip: Always check intercepts first when graphing a linear equation—they provide a quick way to draw the line!

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Algebra
Coordinate Geometry

Formulas

Standard form of a linear equation: Ax + By = C
Slope-intercept form: y = mx + b
Finding intercepts: x-intercept when y = 0, y-intercept when x = 0

Theorems

Intercept theorem for linear equations
Properties of lines in Cartesian planes

Suitable Grade Level

Grades 6-8