SOLUTION: Solve each system by substitution. Determine whether the equations are independent, dependent, or inconsistent. Y = -4x – 7 Y = 3x

Algebra ->  Expressions-with-variables -> SOLUTION: Solve each system by substitution. Determine whether the equations are independent, dependent, or inconsistent. Y = -4x – 7 Y = 3x       Log On


   

Question 317493: Solve each system by substitution. Determine whether the
equations are independent, dependent, or inconsistent.
Y = -4x – 7
Y = 3x
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.y+=+-4x-7
2.y+=+3x
Substitute eq. 2 into eq. 1,
3x=-4x-7
7x=-7
highlight%28x=-1%29
Then from eq. 2,
y=3%28-1%29
highlight%28y=-3%29
.
.
.
There is one solution, the equations are independent.