Answer quickly !
answer these questions to the best of your knowledge!

1. using the picture below, which set of ordered pairs models a function? (picture 1)

2. which comparison is true?

a. 4 < square root of 18 < 4.5
b. 4.5 < square root of 18 < 5
c. 8.5 < square root of 18 < 9.5
d. 17 < square root of 18 < 19

3. using the picture below, what is the solution to the system of linear equations? (picture 2)

a. (-5, -4)
b. (1, 3.5)
c. y= -x + 11
d. y= 3.5x + 1