Which set of ordered pairs left bracket, x, comma, y, right bracket(x,y) could represent a linear function?

Question

A, equals, left curly bracket, left bracket, minus, 5, comma, 2, right bracket, comma, left bracket, minus, 3, comma, 1, right bracket, comma, left bracket, 3, comma, minus, 2, right bracket, comma, left bracket, 7, comma, minus, 3, right bracket, right curly bracket
A=
{(−5,2),(−3,1),(3,−2),(7,−3)}
B, equals, left curly bracket, left bracket, minus, 9, comma, 2, right bracket, comma, left bracket, minus, 3, comma, 4, right bracket, comma, left bracket, 6, comma, 8, right bracket, comma, left bracket, 9, comma, 9, right bracket, right curly bracket
B=
{(−9,2),(−3,4),(6,8),(9,9)}
C, equals, left curly bracket, left bracket, 3, comma, 6, right bracket, comma, left bracket, 5, comma, 2, right bracket, comma, left bracket, 7, comma, minus, 3, right bracket, comma, left bracket, 9, comma, minus, 7, right bracket, right curly bracket
C=
{(3,6),(5,2),(7,−3),(9,−7)}
D, equals, left curly bracket, left bracket, minus, 4, comma, minus, 7, right bracket, comma, left bracket, 0, comma, minus, 2, right bracket, comma, left bracket, 4, comma, 3, right bracket, comma, left bracket, 8, comma, 8, right bracket, right curly bracket
D=
{(−4,−7),(0,−2),(4,3),(8,8)}

Answer 1

A={(−5,2),(−3,1),(3,−2),(7,−3)}