Question

Which ordered pair in the form (x, y) is a solution of this equation?

(x + 3)y = 14


A.
(3, 2)

B.
(7, 2)

C.
(11, 1)

D.
(5, 2)
Which pairs are solutions to the equation?

3xy + 9 = 33

A.
(1, 11) and (2, 6)

B.
(8, 1) and (2, 6)

C.
(1, 8) and (1, 11)

D.
(1, 8) and (8, 1)

Answer 1

In these type of question, the easiest way to get the answer is try to plug in the x and y values from the options given in the equation given,

So in the first question all the choice except C are more then 14 if you plug in x and y's,
for eg, if you plug in x = 3 and y = 2 , you get
(3+3)2 = 14
6 x 2 = 14
12 is not equal to 14, so this eliminates this choice but if you chose C you get,
(11+3)1 = 14
14 = 14 so this makes C the solution for first question and for the second question do the same thing, and the answer will be D. Hope this helps

Answer 2

My Guess was that 1 is C and 2 is D......Am i correct?

Answer 3

oh oops just read your whole responce thanks..

Answer 4

yes you are, well if you wanna make sure if you are right or wrong just plug the x and y from the options like i said and if the left hand side of the equation is equal to the right hand side (for eg, 14 = 14) then it is correct.

Answer 5

Hey could you help me with these 5 other questions someone else tried to help me but they were all wrong :(

Answer 6

I just overlooked the 5 questions and there is only a couple i need help with....

Answer 7

Solve the equation for y.

5x – 7y = 10