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### Course: Algebra 1>Unit 5

Lesson 6: Summary: Forms of two-variable linear equations

# Slope from equation

Worked examples of finding the slope of a line given its equation, using many forms of equations.

## Want to join the conversation?

• I don't quite understand where Sal got the equation in . He mentioned other videos; where can they be found?
• Guys, I'm going to be honest with you.
I am completely LOST.
Does anyone have a different way to explain things?
I was following along with Sal and kinda starting to understand things until .
• Im very confused too...
• the video starts with a review of the y=mx+b formula which, according to Sal, was covered in previous videos;
it wasn't...
i think the order of these playlists is sometimes messed up
• If we had a problem such as 4x-3y=9, and we needed to find the slope of that line, how would we do that, since you'd need to move the y onto the other side?
• Subtract 4x from both sides.
Then, divide the entire equation by -3 (the coefficient of Y).
The equation will then be in slope-intercept form: y = mx+b
The slope will be the coefficient of X.
Hope this helps.
• How is point-slope form helpful for me if the y = mx + b mean the same?
• Point-slope is mostly used when the point you're given is not the y-int.
• what is point slope form??
• The videos introducing Point-Slope and Slope Intercept form are in the Algebra playlists.

Algebra Unit 5 Lesson 4

• what is "b"? when Sal said y=mx+b
• In slope-intercept form (y=mx+b), the "b" is the y-intercept at (0,b). For example: y=2x-5, the 2 is the slope of the line and the -5 if the y-intercept at (0,-5)