Question

Which ordered pairs in the form (x, y) are solutions to the equation

7x – 5y = 28?



Choose all answers that are correct.



A.


(−6, −14)


B.


(−1, −7)


C.


(4, 10)


D.


(7, 9)

Answer 1

how

Answer 2

B

Answer 3

just substitute each pair into the equation and check if it is correct.

Answer 4

^

Answer 5

Just plug in each choice into the equation and see if it makes a true statement.
If it does, it satisfies the equation.

Answer 6

the left side as to equal 28, put in all the numbers and find which one equals 28

Answer 7

i cant if i get it wrong the first time that is it for that question

Answer 8

The B one works:
7(-1) - 5(-7) = 28
-7 + 35 = 28
28 = 28

Answer 9

Here is the worked out problem for choice A.

7x – 5y = 28
A. (-6. -14)

7(-6) - 5(-14) = 28
-42 + 70 = 28
28 = 28

Since 28 = 28 is true, that means (-6, -14) is a solution, so choice A works.

Now follow the same procedure for each of the other choices.

Answer 10

C and D don't work

c.
7(4) - 5(10)=28
28 - 50 = 28
-22 = 28
This is not true.

D.
7(7) - 5(9)=28
49 - 45 = 28
4=28
This is also not true.

So only A and B work.

Answer 11

d because i said so