Nom : Professeur : Date : Resultat :

Nom :
Professeur : Date :
Resultat :
Math-Aids.Com
Solving Systems of Equations by Substitution
Solving Systems of Equations by Substitution
1 ) 2x + 4y = 0
y = -8x
2 ) 7x - 4y = -7
5x + y = 22
3 ) x + 7y = 24
x - 9y = -24
4 ) y = - 3
4
_ x + 4
y = - 1
2
_ x - 1
5 ) y = 6x - 14
y = -8x
6 ) y = 1
3
_ x - 4
y = - 7
3
_ x + 4
7 ) y = - 13
4
__ x + 7
y = - 3
4
_ x - 9
8 ) y = 4
5
_ x - 3
y = -7
9 ) 7x - 5y = -24
-9x + 5y = 18
10 ) 6x + 4y = 6
3x = -15
Feuille 35

Nom :
Professeur : Date :
Resultat :
Math-Aids.Com
Solving Systems of Equations by Substitution
Solving Systems of Equations by Substitution
1 ) 2x + 4y = 0
y = -8x
(0,0)
2 ) 7x - 4y = -7
5x + y = 22
(3,7)
3 ) x + 7y = 24
x - 9y = -24
(3,3)
4 ) y = - 3
4
_ x + 4
y = - 1
2
_ x - 1
(4,1)
5 ) y = 6x - 14
y = -8x
(1,-8)
6 ) y = 1
3
_ x - 4
y = - 7
3
_ x + 4
(3,-3)
7 ) y = - 13
4
__ x + 7
y = - 3
4
_ x - 9
(4,-61)
8 ) y = 4
5
_ x - 3
y = -7
(-5,-7)
9 ) 7x - 5y = -24
-9x + 5y = 18
(3,9)
10 ) 6x + 4y = 6
3x = -15
(-5,9)
(6,4 -13,8)
(20,-11)