1) What is the equation of a circle centered at the origin and passing through the point (-7,4) ?

radius = r

2) For the triangle PQR, with P (-10,6), Q(-2,8) and R(3,-2) draw the sketch of the median from R and determine its question.

let X = midpoint of PQ

hence the median = RX

x coordinate of X = (-10 - 2)/2 = -6

y coordinate of X = (6 + 8)/2 = 7

X = (-6, 7)

slope of RX = = -1

y = -x + 1