Determine whether y varies directly with x. If so find the constant variation of k. 3y = -7x

y is directly proportional to x

y = kx

from,

3y = -7xy

y = -7/3 x

by comparing the 2 eqns,

k = -7/3

step-by-step explanation:

milk=16 large

soda=280 kids

juice box=82 regular

63 soda +63 regular

124 large total

y=3x+4

step-by-step explanation:

given the points a(0,4) and b(-4, -8)

eqn of line ab: (y-4)/(x-0)=(-8-4)/(-4-0)

(y-4)/x=-12/-4=3

y=3x+4