Which ordered pairs are solutions to the equation?
y = 3x – 4
a. (11, 5) and (2, 2)
b. (5, 11) and (3, 2)
c. (5, 11) and (2, 3)
d. (5, 11) and (2, 2)

To solve this you want to plug in your x's and y's to see if they match.

A. 3(11)-4=33-4=29 and 29 is not equal to 5 so A is not a solution

B.3(5)-4=15-4=11=11  3(3)-4=9-4=5 and 5 is not equal to 2 so B is not a solution

C. 3(2)-4= 6-4=2 2 is not equal to 3 so C is not a solution

D is the answer. 3(5)-4=11 and 3(2)-4= 2

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value