Determine which of the following are functions. Select all that apply. {(-4, 2), (-2, 1), (-1, 3) (-1, 4), (0, 5), (2, 5)} y = -4x² + 45x + 9

the answer is (-4,-4)

hope this ! : d

2 x 503

step-by-step explanation:

its 1006

3 3 6, because in every triangle the longer side is always shorter than the sum of the other two

answer: c

substitute in the values.

for a:

f(0) = 0 + 9

f(0) = 9

a is a solution.

for b:

f(7) = 14 + 9

f(7) = 23

b is a solution.

for c:

f (3) = 6 + 9

f(3) = 15

c is not a solution. it's supposed to be 14.

for d:

f(2) = 4 + 9

f(2)= 13

d is a solution.