Math Problem Statement

Find the inequality represented by the graph.

Solution

The graph shows a linear inequality. From the image, we can break the problem down as follows:

  1. Identify the boundary line: The line appears to pass through two points:

    • (5,3)(-5, 3)
    • (2,1)(2, 1)

    To find the equation of the line, we calculate the slope (m):

    m=y2y1x2x1=132(5)=27m = \frac{y_2 - y_1}{x_2 - x_1} = \frac{1 - 3}{2 - (-5)} = \frac{-2}{7}

    So, the slope m=27m = -\frac{2}{7}.

    Using the point-slope form of the line yy1=m(xx1)y - y_1 = m(x - x_1), let's use the point (2,1)(2, 1):

    y1=27(x2)y - 1 = -\frac{2}{7}(x - 2)

    Simplifying:

    y1=27x+47y - 1 = -\frac{2}{7}x + \frac{4}{7}

    y=27x+47+1y = -\frac{2}{7}x + \frac{4}{7} + 1

    y=27x+117y = -\frac{2}{7}x + \frac{11}{7}

  2. Determine the inequality: The shaded region is below the line, which suggests that the inequality is \leq or <<. Since the boundary line is solid, the inequality is \leq.

Thus, the inequality represented by the graph is:

y27x+117y \leq -\frac{2}{7}x + \frac{11}{7}

Would you like further details or have any questions?

5 Related Questions:

  1. How do you graph an inequality with a non-solid boundary line?
  2. Can an inequality have more than one shaded region?
  3. What happens when an inequality flips its sign (e.g., from \leq to \geq) in a graph?
  4. How does changing the slope affect the graph of a linear inequality?
  5. What is the significance of testing points to determine the correct shaded region?

Tip:

Always test a point (like (0,0)(0, 0), if not on the line) to verify which side of the line should be shaded when graphing inequalities.

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Math Problem Analysis

Mathematical Concepts

Linear Inequalities
Graphing
Slope-Intercept Form

Formulas

Slope formula: m = (y2 - y1) / (x2 - x1)
Point-slope form: y - y1 = m(x - x1)
Slope-intercept form: y = mx + b

Theorems

Equation of a line
Graphical representation of inequalities

Suitable Grade Level

Grades 8-10