Math Problem Statement

Which point would be a solution to the system of linear inequalities shown below? y, is less than, 3, x, plus, 8, y, is greater than, minus, 2, x, plus, 3 y<3x+8y>−2x+3 Answer Multiple Choice Answers left parenthesis, minus, 6, comma, 0, right parenthesis(−6,0) left parenthesis, minus, 12, comma, minus, 10, right parenthesis(−12,−10) left parenthesis, minus, 12, comma, 4, right parenthesis(−12,4) left parenthesis, 4, comma, 10, right parenthesis(4,10)

Solution

To determine which point is a solution to the system of inequalities:

y<3x+8andy>2x+3y < 3x + 8 \quad \text{and} \quad y > -2x + 3

we will test each of the given points by substituting the coordinates (x,y)(x, y) into both inequalities and check if both inequalities are satisfied.

1. Point (6,0)(-6, 0)

  • For y<3x+8y < 3x + 8: 0<3(6)+8=18+8=100 < 3(-6) + 8 = -18 + 8 = -10 This is false because 0100 \not< -10.

2. Point (12,10)(-12, -10)

  • For y<3x+8y < 3x + 8: 10<3(12)+8=36+8=28-10 < 3(-12) + 8 = -36 + 8 = -28 This is false because 1028-10 \not< -28.

3. Point (12,4)(-12, 4)

  • For y<3x+8y < 3x + 8: 4<3(12)+8=36+8=284 < 3(-12) + 8 = -36 + 8 = -28 This is false because 4284 \not< -28.

4. Point (4,10)(4, 10)

  • For y<3x+8y < 3x + 8: 10<3(4)+8=12+8=2010 < 3(4) + 8 = 12 + 8 = 20 This is true because 10<2010 < 20.

  • For y>2x+3y > -2x + 3: 10>2(4)+3=8+3=510 > -2(4) + 3 = -8 + 3 = -5 This is true because 10>510 > -5.

Conclusion:

The point (4,10)(4, 10) satisfies both inequalities, so it is the solution.

Answer: (4,10)(4, 10)


Do you want further details on any part of this solution, or have any questions?

Here are 5 related questions:

  1. How do you graph the system of inequalities y<3x+8y < 3x + 8 and y>2x+3y > -2x + 3?
  2. Can a system of inequalities have more than one solution?
  3. How would the solution region of this system change if the inequalities were non-strict (i.e., \leq and \geq)?
  4. How do you solve a system of inequalities with more than two constraints?
  5. Can the method used here apply to nonlinear inequalities?

Tip: Always graph the system of inequalities to visualize the solution set clearly.

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Math Problem Analysis

Mathematical Concepts

Linear Inequalities
Graphing Systems of Inequalities
Coordinate Geometry

Formulas

y < 3x + 8
y > -2x + 3

Theorems

Test Point Method for Inequalities

Suitable Grade Level

Grades 9-10