SOLUTION: Please help me solve this, I have posted it several times. Determine if the ordered pair is a solution of the equation 3x-y=12 (0,4) (4,0) (-1, 15) Please help me out on

Algebra ->  Linear-equations -> SOLUTION: Please help me solve this, I have posted it several times. Determine if the ordered pair is a solution of the equation 3x-y=12 (0,4) (4,0) (-1, 15) Please help me out on       Log On


   

Question 70078: Please help me solve this, I have posted it several times.
Determine if the ordered pair is a solution of the equation
3x-y=12 (0,4) (4,0) (-1, 15)
Please help me out on this
Thanks
Found 2 solutions by jim_thompson5910, stanbon:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Each ordered pair is simply (x,y). For instance, (0,4) can written as x=0 and y=4.
So to see if the solutions work, plug them into the equation
3x-y=12


3%280%29-4=12check to see if 1st pair works
-4=12 false


3%284%29-0=12check to see if 2nd pair works
12=12 true


3%28-1%29-15=12check to see if 1st pair works
-3-15=12
-18=12 false (edit: sorry I read the problem wrong)
So only (4,0) is the only solutions.


Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Determine if the ordered pair is a solution of the equation
3x-y=12
Substitute the x and the y values into the equation to see if you get a true statement:
(0,4): 3*0-4=12; -4=12; not true so pt is not a solution.
(4,0): 3*4-0=12; 12=12; true so pt is a solution
(-1,15): 3*-1-15=12; -3-15=12;-18=12; falso so pt is not a solution
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Cheers,
Stan H.