Question

y varies inversely with x. Find the inverse variation equation if x = 12 when y = -18.

a. y/x = -3/2
b. y/x = -216
c. xy = -216
d. xy = -3/2

Answer 1

I dont gett itt

Answer 2

@Abhisar

Answer 3

i think i remember how these work
inverse variation means
\[y=\frac{k}{x}\] for some \(k\) (they always use k) and you have to find it

Answer 4

\[y= -\frac{ 3x }{ 2 }\] ?

Answer 5

would it be x/y?

Answer 6

y/x *

Answer 7

sorry site crashed for me \[y=\frac{k}{x}\]
\[-18=\frac{k}{12}\]

Answer 8

what does that mean? the -18= k/12

Answer 9

it means that
\[xy=k\] so we solve for \(k\) and get \(k=-18\times 12\)

Answer 10

ohh ok