Which equation results from adding the equations in this system? Negative 8 x + 8 y = 8. 3 x minus 8 y = negative 18. 5 x = negative 10 5 x = 26 Negative 5 x = 26 Negative 5 x = negative 10 on edge?

D is your answer

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

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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