Math Problem Statement

Write an equation in slope-intercept form for the line with slope 2 and y-intercept 4. Then graph the line.

Solution

The problem asks to write an equation in slope-intercept form for a line with slope m=2m = 2 and yy-intercept b=4b = 4, and then graph the line.

Slope-intercept form:

The general form of a linear equation in slope-intercept form is:

y=mx+by = mx + b

Where:

  • mm is the slope,
  • bb is the yy-intercept.

In this case:

  • m=2m = 2 (given slope),
  • b=4b = 4 (given yy-intercept).

Equation of the line:

Using the values of mm and bb:

y=2x+4y = 2x + 4

This is the equation in slope-intercept form.

Graphing:

  1. The line crosses the yy-axis at (0,4)(0, 4).
  2. From this point, apply the slope m=2m = 2. This means for every 1 unit you move to the right (along the xx-axis), the line moves 2 units up (along the yy-axis).

If you plot these points, you will be able to graph the line.

Would you like more details or assistance with the graphing?

Related Questions:

  1. What is the slope-intercept form for a line with slope 3-3 and yy-intercept 55?
  2. How do you convert a standard form equation into slope-intercept form?
  3. What happens to the line if the slope becomes zero?
  4. How do parallel and perpendicular lines relate to the slope of a line?
  5. Can you find the xx-intercept of the line y=2x+4y = 2x + 4?

Tip: The slope tells you how steep a line is, and the yy-intercept tells you where the line crosses the yy-axis.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Slope-Intercept Form

Formulas

Slope-intercept form: y = mx + b

Theorems

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Suitable Grade Level

Grades 6-8