Graphing 15 - Slope-intercept Form 1

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Taught by YourMathGal
  • Currently 4.0/5 Stars.
14592 views | 1 rating
Part of video series
Meets NCTM Standards:
Lesson Summary:

In this lesson, we learn how to graph a line using the slope-intercept method. The first step is to plot the y-intercept, which is the coordinate where the line crosses the y-axis. The slope, which is the coefficient of x, is then used to plot another point on the line. By connecting these points with a straight line, we can accurately graph the line. To ensure the line is graphed correctly, we can check any point on the line to make sure it satisfies the given equation.

Lesson Description:

Shows how to graph a line using the slope-intercept method. This is part 15 of a series of videos about graphing lines.

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com

Questions answered by this video:
  • How do you graph a line using the slope-intercept method?
  • What is slope-intercept form of a line?
  • What do m and b stand for in y = mx + b?
  • How do you graph y = 2x - 3 without using a table?
  • What do m and b equal in y = 2x - 3?
  • How can you check to make sure that a point is on a line?
  • How can you check to make sure that (3, 3) is on the line y = 2x - 3?
  • What are m and b in y = -2/3x + 1?
  • How do you graph the line y = -2/3x + 1?
  • How do you identify the slope and y-intercept of a line from an equation?
  • How can you check that the point (3, -1) is on the line y = -2/3x + 1?
  • How do you graph the line y = -4x?
  • What are the slope and y-intercept of the equation y = -4x?
  • How can you check that the point (-1, 4) is on the line y = -4x?
  • How do you graph the line y = -2?
  • How do you graph a line if there is no x?
  • What are the slope and y-intercept of a horizontal line like y = -2?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson is one of the most memorable from all of Algebra -- learning to graph a line from an equation in slope-intercept form. This is an essential and very valuable lesson, and all ideas, including the concept of -#/+# being the same as +#/-# to graph the line, are explained very well.