Bao is mixing flour and water to make dough. The graph shows how much water he uses for different amounts of flour. How many liters of water does Bao use per liter of flour?
liters
How many liters of flour does Bao use per liter of water?
liters

answer: a

step-by-step explanation:

10.2 units

there are no figures how am i supposed to answer this question

step-by-step explanation:

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