Question

which equation is the direct linear variation equation for the relationship? the variable y varies directly with x and y=12 when x=3... will fan and medal!!!
A.y=x+9
B.y=x-9
C.y=4x
D.y=1/4x

Answer 1

What do you think it is?

Answer 2

a

Answer 3

cause if you replace x with 3 it equals 12 which is equal to y

Answer 4

Correct

Answer 5

thanks

Answer 6

are you able to help me with 2 more questions?

Answer 7

Sure

Answer 8

ok thanks

Answer 9

what is the inverse variation equation for the relationship?
y varies inversely with x and y =4 when x=2

Answer 10

A.y=2x
B.y=x+2
C.y=1/2x
D.y=8/x

Answer 11

A because put numbers in 4y=2(2x) 2 times to = 4x so 4y=4x ":)

Answer 12

thank you... got 1 more if you dont mind

Answer 13

sure

Answer 14

the function f(x) varies directly with x and f(x)=50 when x=-10
what id f(x) when x=15

Answer 15

A.-30
B.-75
C.-150
D.-5

Answer 16

i would say B?

Answer 17

ok.... thanks very much

Answer 18

well im going to bed goodnight