00010001010008main.ACT000102000blesson2.EAC0100000006c2^[Lesson 2[About line equations[[ Example 1.[Given P=(-2,3) and [Q=(2,1).[a) Find the line equation[PQ.[b) Find the line L [so that L passes through[P and L is perpendicular[to PQ.[c) Find the line L so[that L passes through[Q and L is parallel to[L.[**(d) Find the equation[of the circle that uses[PQ as its diameter.[Your solution:[ ============[-23 21[\``y$R `RTqivrALCuxy%@  H A@6 ! @6#`gu `@6`@  .@ ,    `@6 .@   .@#   !@   @6G!5P Bq xT8 ` @6BqYG!5P 4@xeW2g@@  !@   @6BqYG!5P `W2g@  @# @    [eAct