PLEASE HELP ME.

Is each relation a function? if so, state whether it is one-to-one or many-to-one. 3. (-4,7), (-3,5), (1,4), (3,-8), (5,-11) 4. (-4,8), (-2,4), (0,1), (2,4), (4,8) 5. (-2, 1), (-2,3), (0,-3), (1,4), (3,1)

Aline passes through 3,7 and 6,9 what equation represents the line

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?