math.
posted by margie =] on .
Which of the following is an equation of joint variation?
y = kxz
x varies with y
y = k/x
y = kx

if y=k*x*z, doesn't y vary with x and z?
posted by margie =] on .
Which of the following is an equation of joint variation?
y = kxz
x varies with y
y = k/x
y = kx
if y=k*x*z, doesn't y vary with x and z?