State which of the following ordered pairs is a function. set a: (-1, 0), (-2, 1), (4, 3), (3, 4) set b: (1, 4), (2, 3), (3, 2), (4, 1) set c: (2, 1), (3, 2), (2, 3), (1, 4) a. set a b. set b c. both set a and set b d. set c

d) 48

step-by-step explanation:

16,32,48,64,80,96,112,128,144,160,176,192,208,224,240,256,272,288,304,320,336

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional