Posted by brittney on Tuesday, August 24, 2010 at 5:58pm.
Select the ordered pair from the choices below that is a solution to the following system of equations:
4y = x  13
2x + 16y = 20

algebra  Henry, Tuesday, August 24, 2010 at 6:19pm
Write 1st Eq in STD form:
x  4y = 13
2x + 16y = 20
Multiply 1st Eq by 2:
2x + 8y = 26
2x + 16y = 20
Add the 2 Eq:
24y = 6
y = 1/4
Substitute 1/4 for y in the 1st Eq
and solve for x:
x  4(1/4) 13
x = 12.
(12 , 1/4).

algebra  kdog, Wednesday, May 9, 2012 at 6:02pm
3x + 4y = 12
6x + 8y =16
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