Khan Academy: Algebra: Conic Sections: Iit Jee Circle Hyperbola Common Tangent 5

The final video in the series on solving an IIT JEE problem concerning a tangent line that is common both to a circle and a hyperbola. The video first completes solving for the slope that began in the previous video and then substitutes it in order to determine the y-intercept of the tangent line. With both the slope and y-intercept discovered, the equation can be written of the line that is tangent to both the circle and the hyperbola. [12:17]