Math Problem Statement

What is the equation of the straight line shown below?

Solution

To determine the equation of the straight line in the graph:

  1. Identify two points on the line: From the graph, we can choose points that the line passes through clearly. For example:

    • Point 1: (-6, -3)
    • Point 2: (0, 2)
  2. Find the slope (m) using the slope formula: m=y2y1x2x1m = \frac{y_2 - y_1}{x_2 - x_1} Substituting the points: m=2(3)0(6)=2+36=56m = \frac{2 - (-3)}{0 - (-6)} = \frac{2 + 3}{6} = \frac{5}{6}

  3. Find the y-intercept (c): The y-intercept is where the line crosses the y-axis. From the graph, this occurs at y=2y = 2, so c=2c = 2.

  4. Write the equation in the form y=mx+cy = mx + c: y=56x+2y = \frac{5}{6}x + 2

Final Answer: The equation of the line is: y=56x+2y = \frac{5}{6}x + 2

Would you like me to verify this calculation further or explain any step in more detail?


Here are 5 related questions you might find interesting:

  1. How do you determine the slope when given two points on a line?
  2. What is the significance of the y-intercept in a line's equation?
  3. How would the equation change if the slope were negative?
  4. Can you find the equation of a line parallel to this one passing through another point?
  5. What is the equation of a line perpendicular to this one passing through the origin?

Tip: To quickly check your work, substitute one of the given points into the final equation to ensure it holds true.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Graphing
Slope-Intercept Form

Formulas

Slope formula: m = (y2 - y1) / (x2 - x1)
Equation of a line: y = mx + c

Theorems

Slope-Intercept Form

Suitable Grade Level

Grades 8-10