Absolute value equations | Linear equations | Algebra I | Khan Academy

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Absolute Value Equations

Missed the previous lesson?

Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it's impossible to move forward. It's used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we'll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios.

About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.

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You know what? You rock. There are thousands of teachers at schools, colleges, wherever, who just sit there like a rock and expect you to figure out how to graph the square root of a polynomial or something stupid like that. They get paid for it, but 90% of them don't do their job. You, though, are the reason I'm going to pass my Algebra II class. Thank you.

ZachHendrixVoiceOvers
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10 minutes of Khan academy > a week of learning this in class

natalietf
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Last year I had an awesome math teacher but this year, starting highschool, I have a teacher that didn't even go over this, and he's a horrible teacher. He wasn't even a math teacher last year, he was a damn soccer coach! I'm honestly not surprised I even have to look online just to understand my assignments...

spiritoutcast
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I like my math teacher and all but you explain it much better. 

KissKiss
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its always a break thru with khan fr me where i say "ahhhh now i get it" i love this guy...thank u much!

littlegiant
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I swear, this channel is the best channel for learning EVER. He doesn’t have any flashy intro, He’s never abrupt, his outros are super smooth, He’s not begging for likes, views, or subs, and His voice reminds me of MoistCritikal’s voice. 10/10 better than any teacher I’ve every had or ever will have. Thank you.

jessicabroughton
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So, I signed up to virtual school for credit recovery on my Algebra 2 class and this is actually helping me. Thank you so much and my school nurse for showing me this channel and your website

Noelfriday
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this made so much sense until the graphing

nopenope
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normal teachers dont even do anything just teach stuff you already know using stupid strategies and they get paid anyway and this guy does all this for free and you actually learn from him. Thank you sal! i made an education youtube channel bc of u

fg_playz-sm
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Thanks for every thing way better than my math teacher!!!

nerirodriguez
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Why does math sound so appealing when I am listening to him?
and yet sound drab in class?

metalmanmac
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Spectacular, I've never picked anything up so easily! These videos are GREATLY appreciated.

rachyfroggy
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Life saver- I was looking for the interpretation of absolute value and there it is.

lynny
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I wish he did something like this; 2|3w+8|-13<-5

igethacked
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Thank you so much. Solving the equations was straightforward, but I'm unsure why I need to solve them in the prescribed manner. I now can fully understand the logic behind it. The video is over a decade old but still helping, respect.

zeno_y
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I’m in 7th grade and this really helped me. Thanks!

zyozyo
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You are a real live saver I have a calculus, Algebra, trigonometry exam tommorw and you saved me ❤

NoOne-jwfq
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frfr, my teacher never taught this, and my teacher now expects us know how to do it
but you
khan academy, you have my heart, you make my life so much easier, i was crying over math, but you dry my tears <3

drinkwateryoudumbydumb
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Thank you so much my professor didn't even go over this and we have a hw assignment to do :(

Rich
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Thank you so much! I was stuck on my homework and you made me feel less stressed!

izzyramm