Solving System of Equations by Substiution
Presentation
•
Mathematics
•
8th Grade
•
Practice Problem
•
Hard
Standards-aligned
Jessica Farrow
Used 19+ times
FREE Resource
2 Slides • 8 Questions
1
1.Solve one equation for __ or __.
2.________ this expression into the other equation and _____ for the variable.
3. _____ your answer into the revised equation from Step 1 and _______ for the other variable.
Steps to Solving
A method of solving systems of equations by substituting equations within one another.
When is it best to use substitution over graphing?
2
Which problem would be better for solving by graphing and which would be better by substitution?
y = 6x
2x + 3y = -20
y = 4x -1
y = 2x - 5
x + 5y = 4
3x + 5y = -1
3
Fill in the Blanks
Solve the following system by substitution. Write your answer as an ordered pair. (x,y). No spaces.
y=x+9; 3x+8y=−5
Type answer...
4
Fill in the Blanks
Solve the following system by substitution. Write your answer as an ordered pair. (x,y). No spaces.
x=4y+7; 2x−6=12
Type answer...
5
Fill in the Blanks
Solve the following system by substitution. Write your answer as an ordered pair. (x,y). No spaces.
2x+y=−2; 5x+3y=−8
Type answer...
6
Fill in the Blanks
Solve the following system by substitution. Write your answer as an ordered pair. (x,y). No spaces.
2x−3y=−11; 2x+y=9
Type answer...
7
Fill in the Blanks
Solve the following system by substitution. Write your answer as an ordered pair. (x,y). No spaces.
x+4y=0; 3x+2y=20
Type answer...
8
Fill in the Blanks
Solve the following system by substitution. Write your answer as an ordered pair. (x,y). No spaces.
6x+3y=54; 2x+y=18
Type answer...
9
Fill in the Blanks
Solve the following system by substitution. Write your answer as an ordered pair. (x,y). No spaces.
x−3y=−2; 10x+8y=−20
Type answer...
10
Fill in the Blanks
Solve the following system by substitution. Write your answer as an ordered pair. (x,y). No spaces.
3x−y=−8; 5x+2y=5
Type answer...
1.Solve one equation for __ or __.
2.________ this expression into the other equation and _____ for the variable.
3. _____ your answer into the revised equation from Step 1 and _______ for the other variable.
Steps to Solving
A method of solving systems of equations by substituting equations within one another.
When is it best to use substitution over graphing?
Show answer
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