SOLUTION: Use substitution to solve each system of equations. If the system does not have exactly one solution, state whether it has no solution or infinitely many solutions.
2x-y=-4
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Question 80287This question is from textbook Algebra I
: Use substitution to solve each system of equations. If the system does not have exactly one solution, state whether it has no solution or infinitely many solutions.
2x-y=-4
-3x+y=-9
This question is from textbook Algebra I
Answer by checkley75(3666) (Show Source): You can put this solution on YOUR website!
2X-Y=-4
-Y=-2X-4
Y=2X+4 NOW SUBSTITUTE (2X+4) FOR Y & SOLVE FOR X IN THE OTHER EQUATION.
-3X+(2X+4)=-9
-3X+2X+4=-9
-X=-9-4
-X=-13
X=13 ANSWER.
Y=2*13+4
Y=26+4
Y=30 ANSWER.
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