Systems: Elimination
Presentation
•
Mathematics
•
9th - 12th Grade
•
Medium
Standards-aligned
Veronica Ray
Used 32+ times
FREE Resource
5 Slides • 10 Questions
1
Algebra 2 - Ms. Ray
2
Uses ADDITION
Opposite coefficients
manipulate by multiplication
Ordered pair solutions
What is Elimination?
3
Multiple Choice
What operation is used to ELIMINATE a variable?
addition
subtraction
multiplication
division
4
Multiple Choice
The coefficients of the eliminated variable must be _____.
oppoistes
the same
distinct
does not matter
5
Multiple Choice
When solving for y , the coefficients of __ need to be opposites.
x
y
x and y
6
Multiple Choice
When solving for x , the coefficients of __ need to be opposites.
x
y
x and y
7
Multiple Choice
What operation is used to manipulate equation to have OPPOSITE coefficients?
addition
subtraction
multiplication
division
8
Which variable to eliminate
Multiply by what constant
Ordered pair solutions
Type of system
Elimination
9
Multiple Choice
Manipulate equations so that like terms are ____.
aligned horizontally
aligned verifcally
whatever looks the best
10
Multiple Select
Look for ____ when determining which variable to eliminate.
opposite signs
easy numbers to multiply to (common factors)
same coefficients
vertical alignment of like terms
11
Multiple Choice
To get opposite coefficients, multiply ____.
left side of =
right side of =
only the coefficients eliminating
everything
12
Multiple Choice
To find the second variable, substitute into ____.
an original equation
a manipulated equation
the top equation, always
whatever is the easiest
13
Dependent & Inconsistent system
Solutions in terms of variables
Manipulate to align terms
Elimination
14
Reorder
Order the algorithm (steps) to elimination
Align like terms vertically
Determine the variable to eliminate
multiply equation(s) to have opposite coefficients
add vertically
Solve for variable
15
More examples
All types of systems
Manipulation to align terms
Elimination
Algebra 2 - Ms. Ray
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