SOLUTION: Here is the problem. Find the missing co-efficient and write the completed equation Ax + 3y = 5 (2,1). We have answers from the teacher and our answer doesn't match

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: Here is the problem. Find the missing co-efficient and write the completed equation Ax + 3y = 5 (2,1). We have answers from the teacher and our answer doesn't match      Log On


   

Question 252948: Here is the problem. Find the missing co-efficient and write the completed equation Ax + 3y = 5 (2,1). We have answers from the teacher and our answer doesn't match
Found 2 solutions by hokies, drk:
Answer by hokies(65) About Me  (Show Source):
You can put this solution on YOUR website!
A=1. (Plug in x=2 and y=1 and solve for A)

Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
Here is the original problem:
Ax+%2B+3y+=+5
with coordinate (2,1).
substitute X and Y into the equation to get
2A+%2B+3%281%29+=+5
2A+=+2
A+=+1
So, the equation should be:
x + 3Y = 5.
Hope that is what you were looking for.