Question

X|-2|0|2|4|
Y|-4|0|4|8|

Do the values in the table represent a linear function? If so what is the function rule?
A. The values do not show a linear function.
B. Yes, the values show a linear function; y=1/2x+4.
C. Yes,the values show a linear function; y=2x+2.
D. Yes, the values show a linear function; y=2x.
Is the answer B?

Answer 1

How did you decide it was B ?

Answer 2

Watch x and y values :


x = - 2 , y = - 4 , y = 2 x

x = 0 , y = 0 , y = 2 x

x = 2 , y = 4 , y = 2 x

x = 4 , y = 8 , y = 2 x


y = 2 x

Answer 3

How does y equal 2x