Math Problem Statement

Write an equation for the graph in slope-intercept form.

Solution

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image_path = "/mnt/data/1734375185808n8capv3i.jpg" img = Image.open(image_path) img.show()To write the equation of the line in slope-intercept form, which is y=mx+by = mx + b, we need:

  1. The slope mm:

    • The slope is the change in yy divided by the change in xx (rise over run).
  2. The y-intercept bb:

    • This is the value of yy where the line crosses the yy-axis.

Step 1: Identify two points on the line

From the graph:

  • Point 1: (0,10)(0, 10) (the line crosses the yy-axis here)
  • Point 2: (3,1)(3, 1)

Step 2: Calculate the slope mm

The slope formula is: m=y2y1x2x1m = \frac{y_2 - y_1}{x_2 - x_1} Substitute the points (0,10)(0, 10) and (3,1)(3, 1): m=11030=93=3m = \frac{1 - 10}{3 - 0} = \frac{-9}{3} = -3

Step 3: Write the equation

The slope-intercept form is y=mx+by = mx + b, where m=3m = -3 and b=10b = 10. Substituting these values: y=3x+10y = -3x + 10

Final Answer:

The equation of the line is: y=3x+10y = -3x + 10


Do you want further explanations or have questions about any step? Let me know!

Related Questions:

  1. What is the general formula for slope-intercept form of a line?
  2. How do you find the slope given two points?
  3. What happens when the slope is positive or zero?
  4. How can you determine the equation of a horizontal line?
  5. How do you graph a line given its equation?

Tip: The slope tells you how steep a line is; a negative slope means the line decreases from left to right.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Slope-Intercept Form
Graphing Lines

Formulas

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

Theorems

Slope of a Line
Intercept Theorem

Suitable Grade Level

Grades 8-10