The function is  and the point is .

Differentiate the function 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 :

.