Question

Help *metals*

Answer 1

If y varies directly as x, find the constant of variation if y = 32 when x = 8.

Answer 2

what is the formula for direct variation?

Answer 3

first write the direct variation equation: y = kx. plug in what you know and solve for what you need.

Answer 4

the formula is y=kx so plug in 32 for y and 8 for x.

Answer 5

This answer is 4?

Answer 6

you got it!

Answer 7

yes!

Answer 8

k=4

Answer 9

Next question

Answer 10

Write an appropriate direct variation equation if y = 14 when x = -14.

Answer 11

you should have an idea of what to do, so do it!

Answer 12

what is the formula for direct variation?

Answer 13

y=kx right?

Answer 14

yes, now get to it

Answer 15

yes now plug in 14 for y and -14 for x and that is you're answer

Answer 16

so what is you're answer?

Answer 17

k=-x is that the answer

Answer 18

no, that would mean the \(y=-x^2\)

Answer 19

y=x ?

Answer 20

14=k(-14)

Answer 21

no, 14 = k(-14) solve for k

Answer 22

-1

Answer 23

yes!

Answer 24

yep!

Answer 25

k=-1

Answer 26

y = 14x

y = -14x

y = x

y = -x
(options)

Answer 27

what is -1*x

Answer 28

if k=-1 then what you're answer?

Answer 29

y=-1*x = ?

Answer 30

y=-1x

Answer 31

yes I believe so.

Answer 32

Write an appropriate direct variation equation if y = 8 when x = 2.

Answer 33

I'm done you can do that one on you're own since you know the formula.