Graphing
y=-5/3x+3
y=1/3x-3
(3,-2)
-3x+5y=30
y= 3
Write answers as coordinate points (x,y)
(-5,3)
Which equation will you multiply and what number will you use?
3x+4y=12
2x-2y=10
Bottom by 2
x+y=7
x-y=3
(5,2)
y=4x+3
y=-x-2
(-1,-1)
y=6x-10
y=2x+6
(4,14)
Which equation will you multiply and what number will you use?
6x+7y=20
5x-14y=5
Top by 2
2x-3y=16
2x+3y=4
(5,-2)
y=-1/2x-1
y=1/4x-4
(4,-3)
y=x-4
2x-2y=8
(-1,-5)
Which equation will you multiply and what number will you use?
x+5y=2
8x-7y=3
Top by -8
6x-2y=4
4x-2y=2
(1,1)
y=3x-4
y=-1/2x+3
(2,2)
y=6x-11
-2x-3y=-7
(2,1)
Which equation will you multiply and what number will you use?
6x-10y=0
8x+30y=0
Top by 3
3x-10y=-25
4x+40y=20
(-5,1)
y=-1/2x-2
y=-3/2x+2
(4,-4)
-4x+y=6
-5x-y=21
Solve by elimination (add down)
(-3,-6)
There are 2 different options to set this system up to use elimination. What are the 2 options?
x+3y=7
-2x-y=10
Top by 2
Bottom by 3
-3x+2y=17
x-5y=-10
(-5,1)