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Solving systems of linear equations with substitution example | Algebra II | Khan Academy

479,013 views

Khan Academy

Video Language:

  • English

Caption Language:

  • {{captionLanguage | language_name}} ({{captionLanguage}})

Accent:

  • English (US)

Speech Time:

98%
  • 4:16 / 4:21

Speech Rate:

  • 129 wpm - Conversational

Category:

  • Education

Tags :

Intro:

Video Vocabulary

problem

/ˈpräbləm/

adjective noun

Causing trouble. Question to show understanding of a math concept.

multiply

/ˈməltəˌplī/

verb

To calculate two numbers e.g. 2 x 4.

substitute

/ˈsəbstəˌt(y)o͞ot/

noun verb

person or thing acting or serving in place of another. To perform the tasks instead of someone else.

putting

/po͝ot/

verb

To rate something in importance or value.

solving

/sälv/

verb

To figure out a way to handle a difficult problem.

talking

/ˈtôkiNG/

adjective noun verb

engaging in speech. action of talking. To say things or ideas to someone with words.

rewrite
noun verb

instance of rewriting something. write something again so as to alter or improve it.

positive

/ˈpäzədiv/

adjective noun

Showing agreement or support for something. positive quality.

already

/ˌôlˈredē/

adverb

Having happened or been done before this time.

combine
noun verb

group acting together commercially. unite or merge.

explicitly

/ikˈsplisitlē/

adverb

in clear and often detailed manner, leaving no room for confusion or doubt.

instead

/inˈsted/

adverb

When one thing is replaced by another.

exercise

/ˈeksərˌsīz/

noun verb

physical activity done for health and fitness. To retain your ability or practice your skills.

systems

/ˈsistəm/

noun other

set of things working together as parts of mechanism. Sets of organized planned ideas that work together.

equations

/əˈkwāZHən/

noun other

statement that two values are equal. Mathematical statements showing things to be equal.

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