Question

Help for a medal O.o

Answer 1

if y varies directly with x then y = kx where k is some number

k = y/x



so if you take the values of x and y from the table and plug them in to the above formula for k and find that k is the same for all 3 sets of values then you have shown that y does vary directly with x

Answer 2

I would think it would! Because you cant get each value by *4

Answer 3

I'll do the first one for you

x = -2 y = -8
plugging in these values

k = -8/-2 = 4

Answer 4

now do the same thing with the other 2 sets of values and see if you get k = 4 each time

Answer 5

you do.. it cant be negative beause they are already negative

Answer 6

what do you use k for though

Answer 7

well once you find k you plug its value back into the original formula
you will then hav a formula relating y and x

so if k = 4
then replace k in y = kx to get y = 4x

Answer 8

so k=4 aswell

Answer 9

k = 4 yes

so which option do you think is correct?

Answer 10

B

Answer 11

yup

Answer 12

sweet