Can someone please help?! :( fan and medal

Question

anonymous · Answer

Which ordered pairs in the form (x, y) are solutions to the equation   3x – 4y = 21?
 
Choose all answers that are correct.
 
 A.
(−3, 3)
 
 B.
(−1, −6)
 
 C.
(7, 0)
 
 D.
(11, 3)

anonymous · Answer

attachment

anonymous · Answer

Which of the ordered pairs in the form (x, y) is a solution of this equation?
 
  
 
 
 A.
Both are solutions.
 
 B.
The first is not a solution, but the second is.
 
 C.
Neither is a solution.
 
 D.
The first is a solution, but the second is not.

anonymous · Answer

Which pairs are solutions to the equation?

5xy + 9 = 44
 
 A.
(1, 7) and (7, 1)
 
 B.
(7, 1) and (2, 3)
 
 C.
(4, 11) and (2, 3)
 
 D.
(1, 7) and (4, 11)

anonymous · Answer

Which ordered pairs in the form (x, y) are solutions to the equation 
(x + 3)y = 14?
 
Choose all answers that are correct.
 
 A.
(−5, −7)
 
 B.
(−1, 7)
 
 C.
(10, −2)
 
 D.
(11, 1)

mathmath333 · Answer

we have solve using options here by putting values in the equation

$$(x + 3)y = 14$$

mathmath333 · Answer

lets check for option A  (−5, −7)

mathmath333 · Answer

$$(x+3)y\=(-5+3)(-7)\=(-2)(-7)\=14$$

mathmath333 · Answer

so option A is correct , now lets check option B

mathmath333 · Answer

$$(x+3)y\=(-1+3)(7)\=2\times 7\=14$$

mathmath333 · Answer

so option B is also correct , lets check for option C

mathmath333 · Answer

$$(x+3)y\=(10+3)(-2)\=13\times -2\=-26$$

mathmath333 · Answer

so option C is wrong ,now lets check for option D

mathmath333 · Answer

$$(x+3)y\=(11+3)(1)\=14$$

mathmath333 · Answer

so option D is correct

anonymous · Answer

so are does the correct answers?.

mathmath333 · Answer

so option A B and D are correct

anonymous · Answer

those are the answers for the last one?

anonymous · Answer

what about the first one?

mathmath333 · Answer

yes, i hope u carefully gone through what i did

anonymous · Answer

yeah, thanks :)

mathmath333 · Answer

the same process there also 

try to put each option in that  equation given their and see

anonymous · Answer

for the first one?

mathmath333 · Answer

yeah for first one

anonymous · Answer

i got a and c for the first one

anonymous · Answer

i actually need more help in the second one

mathmath333 · Answer

in first question option a is wrong , while c is correct,check other options also

mathmath333 · Answer

if u  in doubt u can show ur work here

anonymous · Answer

ok

anonymous · Answer

i got b on the second one

anonymous · Answer

@IGreen

mathmath333 · Answer

yes (2,-4) is correct for second one