Algebra: Linear Equations 1 | Linear Equations | Algebra I | Khan Academy


Equations of the form AX=B

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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.

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Algebra: Linear Equations 1 | Linear Equations | Algebra I | Khan Academy

14 Replies to “Algebra: Linear Equations 1 | Linear Equations | Algebra I | Khan Academy”

  1. How do I apply these equations into a graph?
    When I look at YouTube tutorials, I only find y intercept, slope … blah blah blah! But I can’t find any of your equations when I search the term, “How to apply Linear Equations to a Graph!” Where I’m I going wrong!
    Please Help.

  2. Sooo I totally understand this ish but y go and confuse people and divide the 8 and -6 by 2 instead of multiplying the 7 and -6 like you did the first other equation? Using the step by step of the first equation I got 42/40 i know simplified its 21/20 but don’t confuse people I’m sure no one is begging to HAVE to learn this especially me sneaking in study time while this kids watch Sing

  3. Math is confusing when you explain it with short cuts and techniques.
    Just say
    ‘Flip the fraction backwards, forget about the other side, and multiply it across. Simplify if necessary.’
    3 Steps.
    It gets to complicated when you do stuff like at
    6:35 …
    How did you know you could reduce the -6 and the 8 to avoid simplifying the final answer?

    or
    1:39
    How is 1/5 equivalent to 5 when trying to multiply instead of dividing?
    How would you even know? How did you figure out that was what you were supposed to do?

  4. Here it comes, again 1 is omitted. Id be grateful if someone could specify why at 2:01 ‘1’ is left out? Why we are end up only with x=4 instead 1x=4 ? Thank you.

  5. I did the last equation differently I got 42/40 but when I did the equation again with x I simplified it and the got 7/8 would that still count

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