Elimination Method

Use the Elimination Method to solve:

5x + y = 9
10x − 7y = −18

Elimination Method

Use the Elimination Method:

2x + y = 7
3x - y = 3

Opposites

Identify the opposites of...

#1.  -3

#2.  0

#3.  -17

#4.  4

#5.  12

Substitution

y = -3x + 10
y = 5x - 12

Substitution Method

Use the substitution method:

y = 9x + 8

y = x – 8

Substitution Method

Complete this problem using the Substitution Method

y = 3x + 1
4y = 12x + 4

Using Substitution

Solve by doing substitution

 y = 6x − 11
−2x − 3y = −7

Substitution Method

Solve by using the substitution method:

y = -3x - 13
-x - 2y = -4

Substitution

Complete the substitution problem:

      y = 3
      2x + 3y = 15

Substitution Method

Solve this system of equations using the substitution method:

2x + 3y = 4
y = 5x - 27

Progress Check Reflection

Look through your progress check and see where you went wrong.  What mistakes did you make?  Which problems did you get wrong that you thought you did correctly?  What help do you need from us to get yourself to a level 3 or better?

Graphing Equations Using a Computer Program

Go to the link below:

https://www.ixl.com/math/algebra-1/solve-a-system-of-equations-by-graphing

Complete the first problem and reply with the answer you submitted.

Graphing Method

Solve:

-2x - y - 1 = 0
-6x - 3y - 3 = 0