2.Which set of ordered pairs does ***NOT*** represent a function? A)\{(-2, 5), (-7, 4), (9, 3), (0, 5)\}{(−2,5),(−7,4),(9,3),(0,5)}
B)\{(8, -8), (4, -6), (-2, 8), (8, 4)\}{(8,−8),(4,−6),(−2,8),(8,4)}
C)\{(0, 5), (3, 2), (5, -6), (-5, -6)\}{(0,5),(3,2),(5,−6),(−5,−6)} D)\{(3, -2), (-2, -7), (7, -9), (-1, 5)\}{(3,−2),(−2,−7),(7,−9),(−1,5)}

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B again

Step-by-step explanation:

you have (8,-8) and (8,4), same reason as the one before

2.56 is the width of the garden

step-by-step explanation:

{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