The curve is $\"\"$ . \ \

Determine slope of the tangent line through the points $\"\"$ and $\"\"$ .

Slope of a secant line having points $\"\"$ and $\"\"$ : $\"\"$ .

Substitute $\"\"$ and $\"\"$ in above formula.

$\"\"$ .

Slope of the secant line is $\"\"$ .

The tangent line to the curve $\"\"$ at the point $\"\"$ is the line through point P with slope $\"\"$ provided that the limit exists.

The curve is $\"\"$ and point $\"\"$ .

Slope of the tangent line is $\"\"$ .

a) Slope of the secant line is $\"\"$ .

b) Slope of the tangent line is $\"\"$ .