SOLUTION: I need help with this problem. The directions are: Graph each system of equations. Then determine whether the system has one solution, no solution, or infintely many solutions. If

Algebra ->  Graphs -> SOLUTION: I need help with this problem. The directions are: Graph each system of equations. Then determine whether the system has one solution, no solution, or infintely many solutions. If       Log On


   

Question 29602: I need help with this problem. The directions are: Graph each system of equations. Then determine whether the system has one solution, no solution, or infintely many solutions. If the system has one solution, name it. The problem is: y=3x
4x+2y=30
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Solve by graphing:
y+=+3x and
4x%2B2y+=+30 Rewrite as: y+=+-2x%2B15 then graph:
Here are the graphs:
graph%28300%2C200%2C-5%2C10%2C-5%2C15%2C3x%2C%28-2x%2B15%29%29
The answer is: There is only one solution and it's (3, 9)