A. complete the table

b. is the relationship a function? explain.

They tell you that the relationship is y is the product of x and 2.  Product means the result of multiplication.

y=2x

And this is a function as each input value, x, has one unique output value, y.)

For output values you will get 2 times the input values. So for x={-2,-1,0,1} you get:

y={-4,-2,0,2}