Question

help? medal will be given *

The value of y varies directly with x. What is k the constant of variation for this function, and what is y for the given value of x?

y = -1/2 when x=6. Find y when x=-3

Answer 1

k = 1/12; -4

k = 12; -4

k = –12; 4

k = -1/12; 1/4

Answer 2

for direct variation, the equation is y=kx
plug in y=-1/2 , x=6 in this and get the value of k.
can you ?

Answer 3

k = -1/12 ?

Answer 4

yes!
now you have y= (-1/12)x
so, just plug in x=-3 and get the value of y.

Answer 5

y = 1 / 4 ?

Answer 6

very good! its correct \[\checkmark\]