Ms-Brains
  • Ms-Brains
Can somebody please help me learn how to solve this problems, I need help check 5 practice question too. I will medal. :)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
Ms-Brains
  • Ms-Brains
anonymous
  • anonymous
to isolate y first step as follows: 5x-7-10 -7y=-5x-10 change the 5x to this side as negative now, divide by -7 and you'll have: -7y = -5x + 10 --- --- --- -7 -7 -7 the final answer is y = 5/7x - 10/7
Ms-Brains
  • Ms-Brains
Oh, That makes sense. Thanks cx Can you help with 4 more?

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anonymous
  • anonymous
sure thing :)
Ms-Brains
  • Ms-Brains
How would I solve this?
anonymous
  • anonymous
try plugging in each ordered pair into the equation, in this case the first coordinate of the ordered pair is "a" and the second coordinate is "b". when you try plugging in each ordered pair you should get (7,0) as a solution, because when you put 7 in for "a" in the equation and 0 for "b' you get 21-0=21. therefore (7,0) is the ordered pair that satisfies this equation. the answer is C.
anonymous
  • anonymous
A*
anonymous
  • anonymous
the answer is (7,0), lol
Ms-Brains
  • Ms-Brains
Lol. Thank you so much, You're helping me learn this so much better then my teacher.
Ms-Brains
  • Ms-Brains
What about this?
anonymous
  • anonymous
aha thank you! xD
anonymous
  • anonymous
to determine if the ordered pair satisfies the equation simply plug the x coordinate into the equation wherever you see and plug the y coordinate into the equation wherever you see y. so let's take the first ordered pair: (3,-8) the x value=3 and the y value= -8. so now wherever you see an x, instead put 3 and wherever you see y, instead put -8. when you do you get: [(3) x (3)] - [(-8) / (4)] = 11. when you simplify you get: 9 + 2= 11 and that does work. so (3, -8) is a solution to this equation. do the same thing with the second ordered pair. and when you do you should get: [(3) x (4)] -[(4) / (4)]= 11 and once you simplify you get 12-1= 11. so both ordered pair satisfy the equation. answer A is correct.
Ms-Brains
  • Ms-Brains
Okay, Great, I think it's...A?
Ms-Brains
  • Ms-Brains
(2+7)1 = 10 9+1 = 10?
anonymous
  • anonymous
yes, you're correct!
Ms-Brains
  • Ms-Brains
A?
anonymous
  • anonymous
it's D.
Ms-Brains
  • Ms-Brains
Thank you so much for the help. :)
anonymous
  • anonymous
you're very welcome. :)

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