SOLUTION: whether the pair of values for x and y is a member of the solution set of the equation 2x - y = 6. 3.) x = 4, y = 2 5.) x = 4, y = -2 You have to graph or what?

Algebra ->  Systems-of-equations -> SOLUTION: whether the pair of values for x and y is a member of the solution set of the equation 2x - y = 6. 3.) x = 4, y = 2 5.) x = 4, y = -2 You have to graph or what?      Log On


   



Question 706573: whether the pair of values for x and y is a member of the solution set of the equation 2x - y = 6.
3.) x = 4, y = 2 5.) x = 4, y = -2
You have to graph or what?

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
2x+-+y+=+6
if x+=+4, y+=+2, we have
2%2A4+-+2+=+6
8+-+2+=+6
6+=+6...true, that means the pair of values for x+=+4 and y+=+2 is the solution set of the equation

2x+-+y+=+6
if x+=+4, y+=+-2, we have
2%2A4+-+%28-2%29+=+6
8+%2B+2+=+6
10+=+6...not true, that means the pair of values for x+=+4 and y+=+2 is not the solution set of the equation

check it on a graph: