Which set of ordered pairs represents a function?

\{(-4, -2), (4, 1), (4, -7), (-2, 3)\}{(−4,−,,−−2,3)}
\{(-9, -2), (5, -6), (-4, 3), (5, 2)\}{(−9,−,−−4,,2)}
\{(-8, 0), (-4, -9), (-6, -1), (2, -1)\}{(−8,−4,−−6,−,−1)}
\{(5, -7), (1, 4), (7, -3), (1, -8)\}{(5,−,,−,−8)}

Acompany is making new soccer uniforms for a team. the company uses 2.5 yards of fabric for each shirt. the company uses 82.5 yards of fabric to make shirts and shorts for 15 players. the equation and solution below represents the situation. 15(2.5+x)=82.5; x=3 what does the solution, x=3, represent?

Thee blue triangle has rotated from quadrant i to quadrant iii about the origin. describe the effects of the rotation on the coordinates of the blue triangle.

The table shows the number of students who signed up for different after school activities. activity students cooking 9 chess 4 photography 8 robotics 11 select the true statements about the information in the table.