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Systems of Equations Videos 73 videos

CAHSEE Math 4.1 Algebra and Functions
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Algebra and Functions: Drill Set 4, Problem 1. Which of the graphs fits the equation?

CAHSEE Math 4.4 Algebra and Functions
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CAHSEE Math 5.1 Algebra and Functions
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Algebra and Functions: Drill Set 5, Problem 1. If this equation was graphed on coordinate axes, the graph would look like which of the following li...

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CAHSEE Math 6.1 Algebra I 212 Views


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Description:

Algebra I: Drill 6, Problem 1. Which of the following is equivalent to the equation?

Language:
English Language

Transcript

00:00

Thank you We sneak shmoop b which of the following

00:05

is equivalent to the equation Why equals a minus x

00:09

over x minus b And here the potential answers causing

00:15

All right let's go down The list is why equals

00:18

quantity a minus x over x minus be the same

00:22

thing as a well let's start with the original equation

00:26

What happens if we multiply both sides by x minus

00:29

b while the left side becomes quantity x minus b

00:33

times Why And the right becomes a minus x sound

00:36

familiar that's because it's the same thing as option a

00:39

So apparently is our answer But wait we have to

00:42

be careful because option d says all of the above

00:45

so let's just do a quick check on another option

00:48

to see if he might be our golden child Is

00:50

there a way to get from option beaten back to

00:52

the original equation How about multiplying the right side by

00:56

negative one over negative one which equals negative ax plus

01:01

a over negative b plus x which equals quantity a

01:03

minus X over quantity x minus b so that's the

01:06

same thing as the original equation Looks like a isn't

01:09

our answer After all let's do c just to be

01:12

one hundred percent positive that he is our answer This

01:14

equation is just asking to be cross multiplied a minus

01:18

X equals quantity x minus b times Why that sounds

01:21

exactly like option a and since we said that option

01:24

a is equal to the original transitive lee speaking option

01:28

c equals the original Our answer is d all of 00:01:31.339 --> [endTime] the above Over No

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