1. Is the ordered pair a solution of the system:
{2x+y=4x−y=5(3,−2) 2. Is the ordered pair a solution of the system:
{3x−y=7x+2y=0(2,−1) 3. Is the ordered pair a solution of the system:
{y=−x+1y=2x−5(2,−1) 4. Is the ordered pair a solution of the system:
{2x+3y=1x−y=3(−1,1) 5. Is the ordered pair a solution of the system:
{y=4x+3y=−x−2(−1,−1) 6. Is the ordered pair a solution of the system:
{4x−y=92x+y=3(1,−5) 7. Is the ordered pair a solution of the system:
{x+4y=−63x−y=8(2,−2) 8. Is the ordered pair a solution of the system:
{5x+2y=4x−y=−3(0,2)