Question

Find the value of y for a given value of x, if y varies directly with x.

If y = 3.3 when x = 1.65, what is y when x = 4.85?

Answer 1

9.7

Answer 2

Can you explain how you got that?

Answer 3

i figured since you double 1.65 and you get 3.3 then you can double 4.85 and get the answer 9.7

Answer 4

does that help?

Answer 5

y = kx
3.3 = k(1.65)
k = 2
y = (2)(4.85)
y = 9.7

Answer 6

yep