Which equation, in which k is a constant, represents an inverse proportion between the variables? v = t/k f = –kx2 pv = k y = kx – 8

The inverse proportion is PV = k

We can write the equation as P = k/V or P ∝ 1/V. Thus, P and V are inversely related.

We can rewrite V= T/k as V = kT or V ∝ T. Thus, V is directly proportional to T .

F = -kx² is neither a direct nor an inverse relation.

y = kx – 8 is a linear relation, but it is not a direct proportion because of the “-8” term.

the answer is definitely c.

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).