SOLUTION: Solve the following system using the substitution method: x=-3y+4 and 3x+9y=12. I know how to solve the equation using the substitution method, but I don't know how to get my answ
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Question 675181: Solve the following system using the substitution method: x=-3y+4 and 3x+9y=12. I know how to solve the equation using the substitution method, but I don't know how to get my answer correct with the y variable.
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
...........1...substitute in 2
.............2
______________________________
.............2...solve for
..............there are an number of solutions and the system is
so, the two lines are (one lies perfectly ) and intersect at of both lines
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