Posted by mysterychicken on Wednesday, May 6, 2009 at 10:30am.
Can someone please help me answer these two questions? I have already answered one, and need it checked.
Give any three ordered pairs that are solutions of the equation:
2.-3x - 2y = 0
3.2x- 3y = 12
I have only one ordered pair for this:
2 more needed
- Pre-Algebra - RickP, Wednesday, May 6, 2009 at 10:45am
It would be easier if you solve the equations for y, then plug in a value for x.
-3x - 2y = 0
add 3x to both sides
-2y = 3x
divide both sides by -2
y = (-3/2) x
Now just pick numbers for x (because of the 2 in the denominator, it will help to pick even integers).
x = 2
y = (-3/2) 2
y = -3
so (2, -3)
x = 0
y = (-3/2) 0
y = 0
so (0, 0)
x = -2
y = (-3/2)(-2)
y = 3
so (-2, 3)
- Pre-Algebra - mysterychicken, Wednesday, May 6, 2009 at 11:21am
Thank you Rick!!
I need two more for the third one though...
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