# Graphing 18 - Writing Equations 1

Taught by YourMathGal
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Part of video series
Meets NCTM Standards:
Lesson Summary:

In this lesson, the teacher explains how to write equations of lines given different types of information about the line. The lesson begins with a discussion of slope-intercept form and demonstrates how to write equations in both slope-intercept and standard form. The teacher then provides examples of how to write equations given the slope and a point on the line. Finally, the lesson ends with an example of how to write an equation given the slope and a point that is not the y-intercept. Throughout the lesson, the teacher emphasizes the importance of checking work to ensure the equation is correct.

Lesson Description:

This video covers to how to write equations of lines given info about the line. This is part 18 of a series of videos about graphing lines.

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

• What is the slope-intercept form of an equation?
• How do you write the equation of a line in slope-intercept form if you are given the slope and a point on the line?
• How do you write the equation of a line with slope 3 that goes through the point (0, -5)?
• How do you write the equation of a line with slope -1/2 with y-intercept (0, 4)?
• How do you write the equation of a line with slope 0 that goes through the point (0, -9)?
• How do you re-write an equation that is in slope-intercept form in standard form?
• How can you re-write y = 3x - 5 in standard form?
• How do you re-write y = -1/2x + 4 in standard form?
• How do you eliminate fractions from an equation?
• How do you write the equation of a line with slope 2 that passes through the point (-4, 5)?
• How can you solve for b in y = mx + b if you have a point and the slope?
• How do you write the equation of a line with slope -1/3 that passes through the point (-6, 9)?
• How can you check to make sure that you wrote a correct equation for a line with a given slope that goes through a given point?
• #### Staff Review

• Currently 4.0/5 Stars.
This video explains the process of writing an equation in slope-intercept form of a line that has a given slope and goes through a given point. This is a very useful tactic that is used often in Algebra.