Question

HELP! I fan and give medals!
Write the direct linear variation equation for the relationship:
y varies directly with x and y = 4 when x = 12.
A. y=1/3x
B.y = x + 8
C.y = 3x
D.y = x – 8

Answer 1

@whpalmer4 @ParthKohli Help!! (Please) ;)

Answer 2

I think it might be A. but I'm not sure. :)

Answer 3

Direct linear variation means: y = kx
when x = 12, y = 4. Put the values above and solve for k.

Answer 4

4=k times 12?

Answer 5

Yes. And therefore k = 4/12 = ?

Answer 6

right :)

Answer 7

0.333333

Answer 8

k = 1/3 and so your earlier answer was correct.

Answer 9

oh ok thanks!!! :)

Answer 10

You are welcome.

Answer 11

Yep, agreed that A is correct.