math
posted by ashley on .
Explain, in complete sentences, how you would use the graphing method to solve the following system of equations. Provide the solution to the system and explain what the solution represents on the graph.
x + 4y = –16
3x + 2y = 12

x+4y=16 (1)
3x+2y=12 (2)
Multiply (1) by 3 to get the x's to cancel
3x12y=48 (3)
3x+2y=12 (2)
Now add (3) and (2) together.
10y=60
Divide by 10.
y=6
Substitude y=6 into equation (1) or (2) to solve for x.