Question

http://prntscr.com/9fosn3

Answer 1

I need an explanation on how to do these?

Answer 2

y = k x where k is a constant
takimg one value of y and one of x say x=17 and y = 9 and substituting in the above;

9 = k*27

from that you can find the value of k and write the equation of direct variation using this value

Answer 3

ok

Answer 4

* x = 27 and y = 9

Answer 5

what do you get for k?

Answer 6

I'm still confused

Answer 7

ok, 3