Which ordered pairs in the form (x, y) are solutions to the equation
7x – 5y = 28?
Choose all answers that are correct.
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just substitute each pair into the equation and check if it is correct.
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Just plug in each choice into the equation and see if it makes a true statement.
If it does, it satisfies the equation.
the left side as to equal 28, put in all the numbers and find which one equals 28
i cant if i get it wrong the first time that is it for that question
The B one works:
7(-1) - 5(-7) = 28
-7 + 35 = 28
28 = 28
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.
C and D don't work
7(4) - 5(10)=28
28 - 50 = 28
-22 = 28
This is not true.
7(7) - 5(9)=28
49 - 45 = 28
This is also not true.
So only A and B work.