f.4 MATHS

IN the figure, O,A(-5,0) and B are the vertices of triangle OAB, where OA=AB. The equation of OB is y=-2x. P is the mid-point of OB.

 

a. Show that AP is perpendicular to OB.

 

b. AP is extended to cut the y-axis at Q. Find the coordinates of

(i) P and Q

(ii) B

 

c. BQ is extended to cut the x-axis at R. Find BQ:QR

 

PLS teach me.. THX..

Done