Question

Which does not show a direct variation between x and y?

A. y= 4/x
B. y= 0.5x
C. y= 7x
D. y= x/9

Answer 1

direct variation equations are in the form

\[y =kx \]

where k is the constant of variation.

so which equation is in the same form...?

Answer 2

the one that's not in the form is you answer...

Answer 3

C?

Answer 4

ok.. C is in that form... so its not C

look at the others... the constant can be a fraction or decimal...

Answer 5

no

Answer 6

search for the form
xy = k

Answer 7

or
y=k/x

Answer 8

xy = k is called inverse variation...

Answer 9

Is it A?

Answer 10

thats correct.... A shows inverse variation

in B k = 0.5

and D k = 1/9

hope it helped

Answer 11

Thank you