Write the solution set for equation 7x - 2y = 8 with this replacement set: {(1,-1),(2,3), (0,-4), (4,10)}.
A. {(1,-1),(2,3), (0,-4), (4,10)}
B. {(1,-1),(2,3), (0,-4)}
C. {(2,3), (0,-4), (4,10)}.

Question

Write the solution set for equation 7x - 2y = 8 with this replacement set: {(1,-1),(2,3), (0,-4), (4,10)}.
	A.	{(1,-1),(2,3), (0,-4), (4,10)}
	B.	{(1,-1),(2,3), (0,-4)}
	C.	{(2,3), (0,-4), (4,10)}.

anonymous · Answer

{(1,-1),(2,3), (0,-4), (4,10)}

anonymous · Answer

7x - 2y = 8 seperate x and y first

7x -8 = 2y then put 1 in for x to see if y will then equal 1

7(1)= 2y +8
7 - 8 =2y
(-1 = 2y) -1/2=y...(1,1) not a solution



7(2) -8= 2y
14-8 = 2y
(6 = 2y) /2
3=y (2,3) a valid solution set