Systems of Equations and Quadratic Linear Systems

2x+4y+z=12

x+3y-2z=8

5x+y+z=36

5x-2y=4

-2x+y=2

(-2, -6)

a+b+c=6

9a+3b+c=20

4a-2b+c=15

a=2

b=-1

c=5

x-3y+3z=0

5x+y-3z=0

x+y-z=4

x=3

y=9

z=8

2a-7b+3c=24

a+4b-c=-3

4a-b+2c=23

a=4

b=-1

c=3

-4x-5y-z=18

-2x-5y-2z=12

-2x+5y+2z=14

x=-4

y=0

z=22

-x-5y-5z=2

4x-5y+4z=19

x+5y-z=-20

x=-2

y=-3

z=3

2a-3b+7c=26

a+2b-c=3

3a+4b+2c=22

2a+4b+c=5

a-4b=-6

2b+c=7

a=-2

b=1

c=5

2a+b-c=8

b+c=4

a-b=2

a=4

b=2

c=2

y=x²+3x-5

y=4x-5

(0,5)

(1,-1)

y=x²-x+2

y=3x-1

(3,8)

(!,2)

x²+y2=16

x+y=4

(x-1)²+(y+3)²=25

(1,2)

(6,3)