Substitution Method
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Solve each system by substitution. Determine whether the equations are independent, dependent, or inconsistent.
36.y =-3x+19
y = 2x-1
38. y = -4x-7
y =3x
42. y = x+4
3y-5x = 6
56. 2x- y = 6
2x - y = 3
Solve each system by the substitution method.
70. x + 3y =2
-x + y =1
Solve each system by addition method
8. x + y = 7
x - y = 9
12. x -2y = -1
-x + 5y = 4
16. 3x + 5y = -11
x -2y = 11
22. 2x = 2-y
3x + y = -1
Solve each system by the addition method. Determine whether the equations are independent, dependent, or inconsistent.
26. x -y = 3
-6x + 6y = 17
Solve each system by addition method
36. 3/7x + 5/9y =27
1/9x + 2/7y = 7
44. 3x -2.5y = 7.125
2.5x - 3y = 7.3125
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Solve each system by substitution. Determine whether the equations are independent, dependent, or inconsistent.
36.y =-3x+19
y = 2x-1
-3x +19 = 2x - 1 5x = 20 x = 4
=> y = 2*4 - 1 = 7
So : x = 4, y = 7
38. y = -4x-7
y =3x
-4x - 7 = 3x 7x = -7 x = -1
=> y = 3*(-1) = -3
So : x = -1, y = -3
42. y = x+4
3y-5x = 6
3(x+4) - 5x = 6 3x + 12 - 5x = 6 2x = 6 x = 3
=> y = 3 + 4 = 7
So: x = 3, y = 7
56. 2x ...
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