Math Problem Statement

Write an equation in slope-intercept form of the line. Use integers or fractions for any numbers in the equation.

Solution

To write the equation of the line in slope-intercept form y=mx+by = mx + b, let's analyze the graph shown in your image.

Step 1: Identify two points on the line.

From the graph, it looks like two points the line passes through are:

  • (0,2)(0, 2) (the y-intercept)
  • (2,5)(2, 5)

Step 2: Calculate the slope mm.

The slope formula is: m=y2y1x2x1m = \frac{y_2 - y_1}{x_2 - x_1} Using the two points (0,2)(0, 2) and (2,5)(2, 5): m=5220=32m = \frac{5 - 2}{2 - 0} = \frac{3}{2}

Step 3: Write the equation in slope-intercept form.

We know the slope m=32m = \frac{3}{2} and the y-intercept b=2b = 2 (since the line crosses the y-axis at y=2y = 2).

Thus, the equation of the line is: y=32x+2y = \frac{3}{2}x + 2

This is the slope-intercept form of the equation for the given line.

Let me know if you have any questions! Here are a few related questions:

  1. How do you find the slope if the points are negative?
  2. What if the y-intercept is a fraction?
  3. How do you convert slope-intercept form to standard form?
  4. What is the significance of slope in real-world contexts?
  5. How would the equation change if the line had a negative slope?

Tip: Always double-check your points and slope calculations to avoid sign errors.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Slope-Intercept Form

Formulas

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

Theorems

Concept of slope and y-intercept in linear functions

Suitable Grade Level

Grades 8-10