The function is  and the point is .

Apply derivative on each side with respect to .

.

At the point .

.

This is the slope of the tangent line.

Slope of the tangent line is .

Point-slope form of the line equation is , where is slope.

Substitute and in point-slope form.

The tangent line equation is .

Draw a coordinate plane.

Graph the function .

Draw a tangent line to the function at the point .

Graph :

Observe the above graph :

At the point the function has a tangent line .

The tangent line equation is .

Graph :

.