Videos

Writing Equations in Slope - Intercept Form Video

Added Nov 05, 2017 •

Copy this URL:
Embed code:	<iframe class="edlio-embed-player" type="text/html" width="640" height="360" src="//www.vhstigers.org/apps/embed/?v=163970" frameborder="0" allowfullscreen></iframe> Change dimensions

Show Transcript

hi guys so your essential question for today is how do I write an equation in slope intercept form with kind of already talked about this a little bit last chapter so I'm hoping that this particular section is pretty easy for you guys especially since you guys have a sub today so if you need to finish copying down but that's a question Nina's can go ahead and get started on your warm up this is the one where you see how we go from one to the next one and I'm using a new app this time too for my videos you guys can tell me if it's better or Worse feel like my handwriting might be worse but that you could see it better I don't know myself for example there you add one to get to the next line in here I would add 5 to the next one and so this one is linear what if you can see my keyboard when I do this I guess I can just watch the video let me hear because there is a constant rate of change okay you guys go ahead and do the next one let me know what you guys get for your answer and I'm going to closet next to your going to see if the answers to puzzle okay so for two and three they are both nonlinear because your y values are not being added by constant rate on the second one you add 6 thing at 2 then for eyes are obviously not the same number so that is not linear and then three you add by 2 I'm not supposed to be tracked by 2 I'd bite you at my 0-2 so it's also nonlinear cuz a lot about is not being added by constituent okay so today is less than isn't bad at all equations of a line when I introduced to Oliver equations so the first one is standing form and that's a x + b y equal see something about this one is that X and Y are on the same side slope intercept form of this one's my favorite y equals MX plus b please note that this be here is not the same as the b in standard form M here represents our slope and B represents the y intercept point slope form point slope form is gives you your point and your slope and this one happens to be my favorite but never is anybody else favorite that's okay it's y minus y1 equals m x minus x 1 m is still your slope and X1 why one is a point on the line okay today we're focusing on slope intercept form which is going to be this one Copa MX plus b a k Ferguson statement first examples super basic it says write an equation of each line with the given slope and y-intercept so slope equals -3 y intercept is 1/2 were using since they're such a question says writing equations in slope intercept form and then it says anyway sorry slope intercept form so we're going to write our in slope intercept form this right here is our m y intercept is be plugged in y equals -3x when I say and I meant it are you and your partner take a second to the next one more me please so I'm assuming you guys got something similar to this y equals 0 x time I might as to what hap what happens to anything times 0 you get zero so this technically goes away and our final answer should be y equals negative you need to finish copying go ahead and do something otherwise I'm going to move on alright this example write an equation of a line in slope intercept form again I like these ones because their pictures and pictures are always to look at in visualized slope intercept form y equals MX plus b we need our slope and we need a r y intercept m&b Aricept is where your equation and your y-axis meet so in this case right there and so that means that -3 is r y intercept it's an L slope is rise over run summon account up 1 to 2 3 4 5 6 and over to the right one two three four 6/4 what goes into both 6 and 4 Tudor's so divide both the top in the bottom right you the simplify 63 over to always remember up and down comes first on top and then left or right goes on the bottom plug it into your y equals 2 / 3x I'm sorry 3 / 2x - 3 Credit Union partner to the next pay attention to your okay so you guys should have gotten y equals -3/4 x + 2 and 3 because we went kind of down and then right and right is pause the four also I forgot to mention always make sure that you simplify your slow no matter what the answers will never be unsimplified and I have to start simplifying a fraction alright next we have rain equation of a line that passes through the given points until these problems are actually really nice because these points are already your y-intercepts so the only thing that knew that we need to find and can you talk to your partner how did I know that those are y intercepts hopefully you're saying because zero is hearing and the other number is in your way slot that makes it your y-intercept because your first Xbox is 0 and then your y-intercept is the ones filled in anytime Exit Zero that's going to be your y intercept the only thing I need to find out if m for my slope and that is where I'm going to start labeling these X1 y1 X2 Y2 and your slope formula on the right up here for you guys just in case y equals y 2 minus y1 over X2 - X1 so here I'm going to do a negative 1 minus 5 over 0 - -3 what happens with that minus minus it turns into a plus -1 - 5 is -6/3 always simple fire slope 3 goes into -6 2 * -2 * my bad and I already said that my y-intercept was -1 so now plug it in y equals -2X - 1 you and your partner go ahead and try the next one the next thing I'll see you at the answers to Part B okay guys so this is another one of those weird ones we got 0 over 8 as your slope with that always equal 0 yes you have to simplify it 2-0 always until then when we plug it into an equation y equals 0 class 5 full what is anything times 0 is 0 so that cancels out and you're just left with y equals negative 5 alright last prom for today we're going to do the word problem together tomorrow write a linear function f with the values at 0 0 equals 10 and 1/2 of 6 equals 34 first thing you want to do this always look super funky fries we don't like this so let's turn it into an ordered pair which one is in my Xbox One zeros in my Xbox and which ones are my wife's by then for the first one cuz you're always already asked and then my other ordered pair which ones in my Xbox x spot and which ones in my wife spot 34 now this is something that we just I'm sick so I can talk it over with your partner which one is my Y intercept and how do you know you guys should be saying 10 is the y-intercept because it is in the water spot and zero is in the Xbox One so all we have to do is find my slope X1 y1 x2y chip baby baby no so 34 the big number 34 - 10 over 6 - 0 34 - 10 is 24 6 - 6 6 goes into 24 for time so I have a slope of 4 and I know B is 10 Uniden y equals Forex listen alright guys you have time to go ahead and get started on your homework I think maybe maybe not tomorrow and will finish the rest of your notes tomorrow in class have a magical Monday

Uploaded by Lauren Stouffer.

Videos

Writing Equations in Slope - Intercept Form Video

More videos from Lauren Stouffer