Posted by Jane on .
I am trying to figure out if these problems are Direct Variation, Inverse Variation, or Neither. Could someone please check my answers?
m=5p Direct
c=e/4 Neither
c=3v Direct
r= 9/t Inverse
n=(1/2)f Direct
u=I/18 Neither
d=4t Direct
z= 0.2/t Inverse

Algebra 2 
Reiny,
suppose I write
c = e/4 as c = (1/4) e
and
u = l/18 as us = (1/8)l
now what do you think? 
Algebra 2 
Jane,
Inverse for both I think. Right?

Algebra 2 
Reiny,
No, both direct, the variable is in the numerator.
I wrote it the way I did, to point that out to you.
Notice that to be an inverse variation, the variable must be in the denominator.