Ill give u brainliest pls

the tables below show four sets of data:

set a
x 1 2 3 4 5 6 7 8 9
y 10 9 8 7 6 5 4 3 2

set b
x 1 2 3 4 5 6 7 8 9
y 3 4 5 6 7 8 9 10 11

set c
x 1 2 3 4 5 6 7 8 9
y 8 6 5 4 3.5 3 2.5 2 2

set d
x 1 2 3 4 5 6 7 8 9
y 1 2.5 2.5 3 4 5 6 8 9

for which set of data will the scatter plot represent a positive linear association between x and y?

select one:
a. set a
b. set b
c. set c
d. set d

Set B.

Step-by-step explanation:

Not A or C: as x goes up, y goes down. :(

D is correct, but not the best because B's is more clear, as when visualizing the graphs, B's makes a perfect line, as where in D, it is bumpier.

{x = -1/2 ,   y = -1

step-by-step explanation:

solve the following system:

{2 x + y = -2

{10 x - 3 y = -2

in the first equation, look to solve for y:

{2 x + y = -2

{10 x - 3 y = -2

subtract 2 x from both sides:

{y = -2 x - 2

{10 x - 3 y = -2

substitute y = -2 x - 2 into the second equation:

{y = -2 x - 2

{10 x - 3 (-2 x - 2) = -2

10 x - 3 (-2 x - 2) = (6 x + 6) + 10 x = 16 x + 6:

{y = -2 x - 2

{16 x + 6 = -2

in the second equation, look to solve for x:

{y = -2 x - 2

{16 x + 6 = -2

subtract 6 from both sides:

{y = -2 x - 2

{16 x = -8

divide both sides by 16:

{y = -2 x - 2

{x = -1/2

substitute x = -1/2 into the first equation:

{y = -1

{x = -1/2

collect results in alphabetical order:

answer:   {x = -1/2 ,   y = -1