Elimination
Substitution
Graphing
Inverse Operations
Paired Coordinates
100
What does eliminate mean?
To take away
100
what letter do you usually have to substitute first?
The "Y"
100
What type o answer would you get for parallel lines?
Hint: When will they cross?
No Solution
100
What we do to one side, we must_______
Do to the other side
100
Which is "X" and which is "Y" in this paired coordinates?
(9,6)
X=9 Y=6
200
x-3y=-17
4x+3y=7
What numbers can be eliminated right now
200
y= 6x - 11
-2x - 3y= -7
What would you substitute the "Y" with in the equation
-2x -3y= -7 based on the above set of equations?
6x-11
200
What solution would you get for a graph like this?
IMS- Infinite Many Solutions
200
What is the Opposite of Multiplication?
Division
200
What does the coordinate pair solution mean in terms of graphing?
It is where the two lines cross
300
What is the first step in this elimination equation?
-2x + 5y= 8
4x - y= -16
Make the Y's the same number
300
What must you do next?
-2x - 3(6x-11)= -7
Distribute out the 3 to everything inside the parenthesis.
300
What is the formula that we use to graph a line?
y=mx + b
300
What is the inverse of -3?
Positive 3 or +3
300
What does it mean when a when you get a solution
6=5
No Solution
400
What mathamatical operation is needed to get the underlined equation?
-2x + 5y= 8
20x - 5y= -80
18x =-72
Addition
-2x. 5y= 8
+20x -5y= -80
18x = -72400
What must you do next?
-2x - 18x + 33= -7
Combine Like terms
-2x with -18x and 33 with -7
400
Which is your M and which is your B in the following equation?
y=2x + 6
M= 2
B= 6
400
8= 2x + 4
What is the first number we eliminate?
4
400
What does it mean when a when you get a solution
6=6
IMS - Infinite Many Solutions
500
Whats the last step after finding "X"?
Substitute the X and find Y
500
What is the solution (coordinate pair) to the given equation?
y= 6x - 11
-2x - 3y= -7
(2,1)
500
What is the second step after making the equations equal themselves in the following equation?
Step 1:
y= 2x + 4
y= -3x - 11
2x + 4= -3x - 11
Step 2:
_____________
Combine Like terms
500
2x=4
How do we get "X" by itself?
Divide the 2x by 2
500
What is the solution to this graph? Answer as coordinate pair. Ex: (x,y)
(1,2)