Math Problem Statement

Is (2, 8) a solution to this system of equations: y = 3x + 2, y = 4x?

Solution

Let's determine if the point (2,8)(2, 8) is a solution to the given system of equations:

  1. Equations provided: y = 3x + 2 \tag{1} y = 4x \tag{2}

  2. Substitute x=2x = 2 and y=8y = 8 into each equation:

    • For equation (1): y=3x+2y = 3x + 2 8=3(2)+28 = 3(2) + 2 8=6+28 = 6 + 2 8=8(True)8 = 8 \quad \text{(True)}

    • For equation (2): y=4xy = 4x 8=4(2)8 = 4(2) 8=8(True)8 = 8 \quad \text{(True)}

  3. Conclusion: Since (2,8)(2, 8) satisfies both equations, it is a solution to the system of equations.

The correct answer is YES.


Would you like further clarification or a breakdown of the steps?


Here are 5 related questions to practice:

  1. What is the solution to the system of equations y=2x+1y = 2x + 1 and y=x+4y = -x + 4?
  2. How do you determine if a point lies on a single line?
  3. What is the graphical interpretation of solving a system of linear equations?
  4. Can a system of equations have no solutions? If yes, what does it mean graphically?
  5. How do you solve a system of equations algebraically using substitution?

Tip: Always substitute the given point into all equations in a system to check if it satisfies each one.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Systems of Equations
Substitution Method

Formulas

y = mx + b (Slope-Intercept Form)
y = 3x + 2
y = 4x

Theorems

If a point satisfies all equations in a system, it is a solution.

Suitable Grade Level

Grades 8-10