Hi please help me fast thank You

Answer:
k=1/4
Step-by-step explanation:
1/4x1=1/4
0x1/4=0
-1x1/4=-1/4
-2x1/4=-1/2
Very easy
Answer:
K=0.25
Step-by-step explanation:
Well the realationship in the problem y=kx. so now we substitute the numbers so that the equation is now -1/2=-2k
-1/2=-2k
-1/2/-2=k
0.25 or 1/4=k