(a).

Total resistance of two components hooked in parallel is given by the equation .

Where are individual resistances.

Let ohms, and graph  as a function of  .

Function .

Where is variable with degree of one on both the numerator and denominator, so take the leading coefficients and divide.

.

Therefore the horizantal asymtote is at .

(1).Draw the coordinate plane.

(2).Plot the points.

(3).Connect the points using a smooth curve.

 Graph :

(b).

The graph has horizantal asymptote at .

As the resistance of increases without bound the total resistance approaches ohms, the resistance .

(c).

When ohms.

It is in the quadratic form .

Where .

The quadratic formula is .

Therefore ohms.

(a).

(b).

The graph has horizantal asymptote at .

As the resistance of increases without bound the total resistance approaches ohms, the resistance .

(c).

ohms.