SOLUTION: Please help solve each system by substitution to determine whether the equations are independent, dependent, or inconsistent.
y = -3x + 19
y = x + 8
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Question 334731: Please help solve each system by substitution to determine whether the equations are independent, dependent, or inconsistent.
y = -3x + 19
y = x + 8
Found 2 solutions by stanbon, mananth:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
solve each system by substitution to determine whether the equations are independent, dependent, or inconsistent.
y = -3x + 19
y = x + 8
----------
Substitute for "y" and solve for "x":
x+8 = -3x+19
4x = 11
x = 11/4
-----------
Substitute into y = x+8 to get
y = (11/4)+8
y = 43/4
y = 10 3/4
=================
Cheers,
Stan H.
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
y = -3x + 19
y = x + 8 subtract one equation from other
-3x+19 -x-8=0
-4x=-11
x=11/4
..
plug value of x in the equation y=-3x+19
y=-3*11/4+19
y=43/4
..
Independant
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