Graphing Systems
Graphing Systems
I can graph two equations on the same graph
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27 Video Interactions
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00:00:41
What is slope intercept form?
- Ax+By=C
- y=mx+b
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00:01:12
How would I write the y-intercept as an ordered pair?
- (0, 4)
- (4,0)
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00:01:47
Will be...
- 0
- 1
- -2
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00:02:14
Which way will I go?
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00:04:07
How many lines on one graph?
- 1
- 2
- 3
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00:04:59
Is...
- (5, 0)
- (0, 5)
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00:05:19
How will I move?
- rise 2
- Run 2
- run 1
- run 0
- rise 1
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00:06:42
And then...
- rise 4
- rise -4
- run -4
- run 1
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00:07:43
Extend the graph and see where they intersect before you move on.
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00:08:10
Where do they intersect?
- (1, 3)
- (-1, 3)
- (3, -1)
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00:09:07
What is the solution?
- (-1, 3)
- (1, -3)
- (3, -1)
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00:09:29
What do you think it means?
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00:10:06
Solve it for y. You get...
- 7
- 3
- 6
-
00:10:27
Solve it for y. You get...
- 3
- -3
- -5
-
00:12:10
Write the problem down.
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00:13:03
What letter stands for extra points?
- y
- x
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00:13:08
What stands for field goals?
- x
- y
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00:13:45
How many?
- 1
- 3
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00:13:47
How many?
- 1
- 3
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00:15:13
What is the slope and y-intercept?
- slope is -1
- y-intercept is 8
- slope is 8
- y-intercept is -1
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00:15:38
How do you get rid of the 3?
- multiply by 3
- divide by 3
- subtract 3
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00:16:23
What is the slope and y-intercept?
- slope is -1/3
- y-intercept is 4
- slope is 4
- y-intercept is -1/3
-
00:16:52
Just watch, don't graph.
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00:18:44
Do both the 1 and the 3 get the negative sign?
- Yes
- No
-
00:19:20
Ordered pair is...
- (6, 2)
- (2, 6)
-
00:20:05
So how many extra points did he make?
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00:22:34
What is the solution to a system of equations?
- where one line crosses the y axis
- where the two lines intersect
- always at the same point no matter what problem
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