Question

1

Answer 1

can u isolate y from that equation ?

Answer 2

that will be:
\(y=(-7/3)x-6 \)
right ?
now compare that with y=kx+c
what u get k as ?

Answer 3

which part, first part or y=kx+c part ?

Answer 4

yup, u got it :)

Answer 5

oh, wait. i am sorry! in direct variation th equation is of the form
y=kx
and not
y=kx+c like this one.
so this equation does NOT represent direct variation.
sorry, for all that......

Answer 6

and since y doesn't vary with x, u cannot find constant of variation..

Answer 7

yup, the answer is NO.

Answer 8

sorry and welcome :)

Answer 9

let w be overcharged amount of water
t=no. of months
direct variation--->w=kt
one gallon of water every 1 month--> w=1,t=1
1=1k---->k=1
so
w=t is the equation.
for t=5, w=5

Answer 10

so 5 months for the residents to be overcharged for 5 gallons of water

Answer 11

how ?

Answer 12

ohh...wait.

Answer 13

let w be overcharged amount of water
t=no. of months
direct variation--->w=kt
one gallon of water every 1 1/3=4/3 month--> w=1,t=4/3
1=(4/3)k---->k=3/4
so
w=(3/4)t is the equation.
for t=5
w=20/3. months = 6 2/3 months

Answer 14

i made a typo, wait..

Answer 15

1=(4/3)k---->k=3/4
so
w=(3/4)t is the equation.
for w=5
t= (4/3)w= 4*5/3 =20/3 months = 6 2/3 months

Answer 16

welcome :)