Which set of ordered pairs (x,y)(x,y) could represent a linear function?
\mathbf{A}=
A=
\,\,\left\{(-1, -7),\,\,(3, -5),\,\,(5, -4),\,\,(7, -3)\right\}
{(−1,−7),(3,−5),(5,−4),(7,−3)}
\mathbf{B}=
B=
\,\,\left\{(-2, -6),\,\,(0, -1),\,\,(2, 4),\,\,(5, 9)\right\}
{(−2,−6),(0,−1),(2,4),(5,9)}
\mathbf{C}=
C=
\,\,\left\{(-1, 9),\,\,(2, 3),\,\,(4, -3),\,\,(7, -9)\right\}
{(−1,9),(2,3),(4,−3),(7,−9)}
\mathbf{D}=
D=
\,\,\left\{(-5, 0),\,\,(-2, 3),\,\,(0, 6),\,\,(3, 9)\right\}
{(−5,0),(−2,3),(0,6),(3,9)}