SOLUTION: I need help bad! Find values for m and b in the following system so that the solution to the system is (-3,4), 5x + 7y = b mx + y =22

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: I need help bad! Find values for m and b in the following system so that the solution to the system is (-3,4), 5x + 7y = b mx + y =22      Log On


   

Question 118195: I need help bad! Find values for m and b in the following system so that the solution to the system is (-3,4),
5x + 7y = b
mx + y =22
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
If the answer is (-3,4), then substitute for x and y in your equations.
First find b.
5x%2B7y=b
5%28-3%29+%2B+7%284%29+=+b
-15%2B28=b
b=13
Next find m.
mx%2By=22
m%28-3%29%2B4=22
-3m%2B4=22
-3m=18
m=-6