Math Problem Statement

What is the slope-intercept form of the line that passes through the points (1, 2) and (3, 6)?

Solution

To find the slope-intercept form of the line that passes through the points (1,2)(1, 2) and (3,6)(3, 6), follow these steps:

  1. Calculate the slope (m): The formula for the slope between two points (x1,y1)(x_1, y_1) and (x2,y2)(x_2, y_2) is: m=y2y1x2x1m = \frac{y_2 - y_1}{x_2 - x_1}

    Plugging in the given points (1,2)(1, 2) and (3,6)(3, 6): m=6231=42=2m = \frac{6 - 2}{3 - 1} = \frac{4}{2} = 2

    So, the slope mm is 2.

  2. Use the point-slope form of the line equation: The general equation of a line in point-slope form is: yy1=m(xx1)y - y_1 = m(x - x_1) Using point (1,2)(1, 2) and slope m=2m = 2: y2=2(x1)y - 2 = 2(x - 1)

  3. Convert to slope-intercept form (y = mx + b): Expand and simplify the equation: y2=2x2y - 2 = 2x - 2 y=2xy = 2x

    Therefore, the slope-intercept form of the line is: y=2xy = 2x

Would you like a further breakdown of the steps, or do you have any questions?

Additional Related Questions

  1. How do you find the slope of a line given two points?
  2. What is the point-slope form, and when is it useful?
  3. Can you convert a line from point-slope to slope-intercept form in any situation?
  4. How do you find the y-intercept when only given two points?
  5. What is the general form of a line equation, and how does it differ from the slope-intercept form?

Tip:

Always check that the slope calculation is accurate, as small mistakes in slope can change the entire equation of the line.

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Math Problem Analysis

Mathematical Concepts

Algebra
Coordinate Geometry
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 8-10