Question

If x varies directly with y and x = 2.5 when y = 10, find x when y = 16.


A.1.5
B.8
C.7.5
D.4

Answer 1

the equation for directly is y=kx, plug in the y and x you have to solve for k, then plug in the numbers and solve for the other x

Answer 2

k=4

Answer 3

i got x = 5/2 but thats not in my answer choice

Answer 4

did you do 16=4x

Answer 5

how did you get 5/2??

Answer 6

so x=4

Answer 7

:p