Question

find an equation of variation in which y varies as x and the following is true y=40 and x=38

Answer 1

y=kx

Answer 2

directly right?

Answer 3

40 = 38k
k = 40/38 = 20/19
y = (20/19)x

Answer 4

no i no its 1520 just dont no what form to put it in

Answer 5

my choices are y=1520 y=1520/x y=1.05/x y=1.05x

Answer 6

if those are your choices then y = 1.05 x is your best shot

Answer 7

i gave you the answer in fraction form,
given a fraction, put in your calculator as 20 divided by 19

Answer 8

mr.cow your right i just divided how did u get the fraction i got 1.05

Answer 9

plug in x and y into general formula for direct variation
y=kx
solve for k

40 = 38k
k = 40/38 = 20/19
y = (20/19)x

Answer 10

thanxs u 2