The tangent line to the curve has slope equal to
. Use implicit differentiation to find this derivative.


The given line in slope-intercept form is

and has slope -9/2. Any line parallel to this one has the same slope. The tangent to the hyperbola has this slope at points (<em>x</em>, <em>y</em>) such that

Find the points on the hyperbola where this condition is met.

Then use the point-slop formula to build the equations of these tangents:

Answer:
68
Step-by-step explanation:
Use the formula provided...
6 and 11 are b1 and b2, and 8 is h.
So, 6+11 = 17
17/2 = 8.5
8.5*8 = 68
Answer:C
Step-by-step explanation:the answer is C