Math Problem Statement

Find the equation of this line. Simplify your answer completely.

Solution

To find the equation of the line, we need to determine two components:

  1. The slope (mm): The slope is calculated as: m=RiseRunm = \frac{\text{Rise}}{\text{Run}} From the graph, the line rises from y=6y = -6 to y=8y = 8, and runs from x=8x = -8 to x=2x = 2. Therefore: Rise=8(6)=14, Run=2(8)=10\text{Rise} = 8 - (-6) = 14,\ \text{Run} = 2 - (-8) = 10 So: m=1410=75m = \frac{14}{10} = \frac{7}{5}

  2. The y-intercept (bb): This is the yy-value where the line crosses the yy-axis. From the graph, the line crosses the yy-axis at b=8b = -8.

The equation of the line in slope-intercept form is: y=75x8y = \frac{7}{5}x - 8

Would you like a breakdown of how to derive the slope or check the solution?


Related Questions:

  1. How can I identify the slope if I don't have clear coordinates?
  2. What is the difference between slope-intercept form and point-slope form?
  3. How do you convert a fraction slope into decimal form?
  4. What is the process for finding the equation of a vertical line?
  5. How does the y-intercept affect the position of the line?

Tip: Always label key points on the graph to make slope and intercept calculations easier!

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Math Problem Analysis

Mathematical Concepts

Algebra
Slope-Intercept Form
Linear Equations

Formulas

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

Theorems

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Suitable Grade Level

Grades 7-9