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Math I Videos 77 videos

SAT Math 2.4 Algebra and Functions
187 Views

SAT Math 2.4 Algebra and Functions

Solving Proportions Using Cross Products
6802 Views

This video covers how to use cross products to solve for a missing number in a proportion by setting that proportion with a variable over the produ...

GED Math 2.4 Rational Numbers
190 Views

GED Math 2.4 Rational Numbers. Lucius's favorite restaurant is how many km from his home?

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GED Math 5.5 Graphs and Functions 882 Views


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Description:

GED Math: Graphs and Functions Drill 5, Problem 5. What is the value of a?

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English Language

Transcript

00:00

Thank you We sneak in and here's your shmoop du

00:05

jour Brought to you by downward opening for abdullah's way

00:10

We planted them all the graph of y equals x

00:13

squared minus two x plus six is shown beloved what's

00:17

the value of a and here's the bench lands Okay

00:21

let's take a quick inventory way Have a problem We

00:24

have a graph and we have our brain Hopefully that's

00:26

enough The equation of the parabola is given its why

00:29

equals x squared minus two x plus six and we're

00:32

being asked to find the value of a right No

00:36

problems There are a few points this parable of passes

00:39

through i look to this graph Negative six zero hero

00:43

thing two zero we can plug in any of them

00:46

But what fans of small numbers around here so let's

00:49

use to zero the equation will become zero equals a

00:53

times two squared minus two times to plus six We

00:57

could clean that puppy up a bit but two squared

01:00

is four and two temps two is also four so

01:03

we can rewrite as zero equals for a minus four

01:06

plus six and of course the minus foreign plus six

01:09

Or really just positive too So we're left with zero

01:12

equals four a plus to subtract two from both sides

01:15

to get negative Two equals for a then divide Both

01:18

sides fight for to get negative a half people's a

01:20

and it looks like our answer is c nice work 00:01:23.092 --> [endTime] framed on your end

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