Graphing a linear equation using a table of values.

A table of values, although it always works, is the least effective method of graphing in that it is not always the easiest and is usually the longest method. This is the 5th of 15 videos about graphing equations. The other three series are "Solving Equations", "Word Problems" and "Factoring".

Category:

Howto & Style

Tags:

• mathematics
• graphing
• series

[m33lad]

wtf is THIS?

[minkusbc]

Sorry, but YouTube has cut the video down to 3 seconds. I will upload a new one shortly.

[JustSkate95]

how do you do a problem like lets say,3y-3x=6

[minkusbc]

Move the 3x to the other side to make it: 3y = 3x + 6, then divide all terms by the number in front of the "y" (which is 3). This leaves us with y = 1x + 2, or just y = x + 2. Now set up your table of values as the video explains.

[videoner]

i thought that when you put the x numbers it has to be a sequence like -2,0,2

[minkusbc]

No, the "x" numbers can be any number. Some are more efficient than others. For instance, if my equation had a denominator of 3, my "x" values would be multiples of 3, like -6, -3, 0, 3, 6, 9 etc.

[mccoyboy06]

@AmethystINK The graph be a horizontal line, from left to right, where y = -4. Since it doesn't matter what value you put in for x, y is always -4, so you could plot points at (-2,-4), (-1,-4), (0,-4), (1,-4), and (2,-4) and draw a line through it.

[chandiliers]

I'm a smart nigga!

[AJacobUnit3]

thank u now i remember it all over again :)

[iTchengfu71]

Hey there sir what is you got a problem that is

X(2)-3x = Y ? what do i do with the 3x how do i make the x with the 3x go away ?

[cctac128]

thank you 

[Juliailu]

Thank you.

[Juliailu]

Great explination!

[nazlee18]

Thanxx alot it helped me a lote i spend at least 2 weeks trying to anderstand and my teacher explains in a way the hole class never anderstands... XD

[AmethystINK]

What about something like y=-4????

[NickDaNerd]

thank you