Plug in the given values into the general equation of a circle:

Solve the equation of the line for

Plug in the term of y into the equation of the circle. Solve the equation for x. You'll get 2 values:

Plug in these values into the equation of the line to get the corresponding values of y:

The line intersects the circle in the points P(2, 1) and Q(-1, -3).

Calculate the length of the chord PQ: