Math Problem Statement

Write the slope-intercept form of the given line. Include your work in your final answer.

Solution

To write the equation of the line in slope-intercept form (which is y=mx+by = mx + b, where mm is the slope and bb is the y-intercept), let's analyze the graph.

  1. Finding the slope mm:

    • The slope mm is calculated as: m=riserunm = \frac{\text{rise}}{\text{run}} From the graph, we can observe two points the line passes through:
    • Point 1: (0,5)(0, 5) (the y-intercept)
    • Point 2: (5,0)(5, 0)

    The rise (change in yy) between these two points is 5-5 (from 5 to 0), and the run (change in xx) is 55 (from 0 to 5).

    Therefore, the slope mm is: m=55=1m = \frac{-5}{5} = -1

  2. Finding the y-intercept bb: The y-intercept is the value of yy when x=0x = 0. From the graph, the line crosses the y-axis at y=5y = 5. Therefore, b=5b = 5.

Thus, the equation of the line is: y=x+5y = -x + 5

Would you like more details on how to interpret the graph, or any other questions?


Here are 5 related questions to explore:

  1. What is the significance of the slope in the slope-intercept form?
  2. How can you find the x-intercept from the equation of a line?
  3. How would the equation change if the slope was positive?
  4. Can you graph a line given only its equation in slope-intercept form?
  5. How can you calculate the distance between two points on a graph?

Tip: When finding the slope, always check for a clear vertical and horizontal distance (rise and run) between two points on the line.

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Math Problem Analysis

Mathematical Concepts

Algebra
Slope-Intercept Form
Linear Equations

Formulas

Slope (m) = rise/run
y = mx + b

Theorems

Slope-Intercept Theorem

Suitable Grade Level

Grades 8-10