Unit+8+Coordinate+Geometry+I+-+Graphing+linear+functions+and+relations

Unit 8: Coordinate Geometry I - Graphing linear functions and relations [|Definition of a function discussion from class] [|Types of function discussion from class] [|Direct Variation discussion from class]

I was confused about the homework and I went on Purplemath.com. The site helped a lot.

Remember to use y=mx+b

Example:

3x-2y= 12 __-3x -3x -2y__= -__3x+12 -2 -2__ y= 3/2x-6 y=mx+b

m=3/2 b=-6

m is the slope, b is the y-intercept

THis is a website I found that teaches you all you need to know

http://wappingersschools.org/Math/MathTexts/Int_Algebra/Chapter09.pdf

[] I found this video. It's a little random, but it mentions the formula for slope=y2-y1/x2-x1

I also thought this was one of some really good and helpful videos by a user on youtube. Check out his other ones! [|http://www.youtube.com/watch?v=Sge6dbJuej8&feature=channel]

I don't completly understand direct variation does anyone care to explain it to me?