Question

Find the constant of variation for each direct variation.
1) 5y=13x
2) x-y=0
3) f(X)= -3x

Answer 1

for the first two questions, you want to get in in the form y=kx

k is the constant of variation

Answer 2

i mainly need help on #2
what is it the constant of vari?ation

Answer 3

can you get x on one side , and y on the other side?

Answer 4

how would i do that? because there are no numbers?

Answer 5

add y to both sides,

(just pretend that the letters are numbers )

Answer 6

brian think bout this 1x = x because anything multipled by 1 is still itself

Answer 7

that would give me x=+y @UnkleRhaukus

Answer 8

right, now use what @Goten77 has just said
note that if y is a number +y is the same as y,

Answer 9

wait so would the constant of variation be y?

Answer 10

k=y ??

Answer 11

not quite,

remember we want the equation of the form

y=kx

which is the same as

kx=y

Answer 12

so would it be y= x since the form is y=kx

Answer 13

@UnkleRhaukus

Answer 14

yeah, so whats k?

Answer 15

(look at what Goten77 has written )

Answer 16

do you get it ?

Answer 17

k=x

Answer 18

right @UnkleRhaukus

Answer 19

nope

Answer 20

k=1?

Answer 21

YES!

Answer 22

yayyyy thank youuuuuu!