15. Using k as the constant of proportionality, write an equation that expresses: Z varies jointly as x and y.
A Z = 1/kxy
B Z = x/ky
C Z = y/kx
D Z = kx/y
E Z = k/xy
F Z = kxy
2007-06-04 04:48:29 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
F) Z = kxy
Z varies as x and as y, meaning that both proportionalities are direct. Direct proportions are expressed as products, rather than the division required for an inverse proportion. Neither of these proportions are inverse, so none of the values appear in the denominator. The constant of proportionality is always a factor as well. So you need to multiply k by x and y, to get Z = kxy.
2007-06-04 04:51:38 · answer #1 · answered by DavidK93 7 · 0⤊ 0⤋
if I was u I would ask someone u know not people u have no idea who ur talking to
2007-06-04 11:58:40 · answer #2 · answered by sesily j 1 · 0⤊ 0⤋