Math Problem Statement

Write the equation of this line in slope-intercept form.

Solution

To write the equation of the line in slope-intercept form, we need to find the slope mm and the y-intercept bb of the line.

Step 1: Identify the y-intercept

The y-intercept is where the line crosses the y-axis. From the graph, it crosses at (0,6)(0, 6), so: b=6b = 6

Step 2: Calculate the Slope

The slope mm is determined by the "rise over run," or the change in y over the change in x between two points on the line.

Using the points (0,6)(0, 6) and (2,3)(2, 3):

  • The change in y (Δy\Delta y) from 6 to 3 is 36=33 - 6 = -3.
  • The change in x (Δx\Delta x) from 0 to 2 is 20=22 - 0 = 2.

So the slope mm is: m=ΔyΔx=32m = \frac{\Delta y}{\Delta x} = \frac{-3}{2}

Step 3: Write the Equation

Using the slope-intercept form y=mx+by = mx + b, we substitute m=32m = -\frac{3}{2} and b=6b = 6: y=32x+6y = -\frac{3}{2}x + 6

Final Answer

The equation of the line is: y=32x+6y = -\frac{3}{2}x + 6

Would you like further details or have any questions?

Here are some related questions to explore:

  1. How can we find the slope if we know only two points on a line?
  2. What is the significance of the y-intercept in a real-world context?
  3. How would this equation change if the line had a positive slope?
  4. What is the general form of a line's equation, and how does it relate to slope-intercept form?
  5. How can we verify if a point lies on this line?

Tip: When finding the slope, always use points that are clearly marked on the grid to avoid errors.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Slope-Intercept Form

Formulas

y = mx + b

Theorems

Slope-Intercept Form

Suitable Grade Level

Grades 8-10