Need it well answered both part a and b

Step-by-step explanation:

Part A:  the x-components of the two vectors are the same, except that one points in the opposite direction as does the other.  Same with the y-components.  Thus, the two vectors are parallel.

Part B:   The x-components of the two vectors are 2 and -3, meaning that -3 is the constant -3/2 times 2.  The y-comps of the vectors are 3 and -2, and -2 is NOT -3/2 times 3.  Therefore, the two vectors are NOT parallel.

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

could you provide figure.