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Graphs and Functions Videos 20 videos
GED Math: Graphs and Functions Drill 5, Problem 5. What is the value of a?
GED Math 1.4 Graphs and Functions. On which point on the graph is f(x) equal to 0?
GED Math 2.1 Graphs and Functions. The equation of f(x) is 2x + what?
Comparing Axes of Symmetry 286 Views
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Description:
GED Math 3.3 Graphs and Functions. Compare function A's axis of symmetry to function B's axis of symmetry.
Transcript
- 00:00
Thank you We sneak in and here's your smoke too
- 00:05
Sure brought to you by symmetry It's really bugging us
- 00:08
that the word is in a palindrome Quadratic function is
- 00:11
shown in the graph below Quadratic function b has the
- 00:14
equation f of x equals x squared plus five x
Full Transcript
- 00:16
plus six function a's axis of symmetry is blank function
- 00:21
bees access of symmetry Well it's dropped down time and
- 00:26
there isn't even a fire We have three possible answers
- 00:29
in our little drop down thing here left of right
- 00:31
of and same at well we're told that the graph
- 00:33
is showing quadratic function a and then we're given the
- 00:36
equation for a quadratic function B it's up to us
- 00:39
to figure out what relation the two axes of symmetry
- 00:42
have to one another you can't cheat but check that
- 00:44
paternity record well for starters operable its axis of symmetry
- 00:49
It's this vertical line that passes through its centre in
- 00:53
the case of quadratic function a it'd be this line
- 00:56
right here x equals two point five to find these
- 00:59
axes of symmetry Well we're going to need to plug
- 01:01
in Chuck We used the equation X equals negative b
- 01:04
over two A where is the coefficient of the x
- 01:08
squared term And b is the coefficient of the extra
- 01:11
In the equation given to us we've got an x
- 01:13
squared coefficient of one and an ex coefficient of five
- 01:17
Well that's going to give us x equals negative five
- 01:20
over two times one or negative five half So what
- 01:24
does that tell us Well we don't care about the
- 01:26
numbers so much as we care about the negative that's
- 01:29
What tells us a cz access of symmetry is to
- 01:32
the right of bees We have our answer by the
- 01:35
way you have a rather lovely axes of symmetry yourself 00:01:38.138 --> [endTime] there if you don't mind my saying so
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