PT bisects QR perpendicularly.P is a point on the y-axis.if Q(1;8) and R(6;1). Find the equation of PT
slope of QR = (8-1)(1-6) = -7/5
so the slope of PT = 5/7
PT must pass through the midpoint of QR which is (7/2 , 9/2)
y-9/2 = (5/7)(x-7/2)
y-9/2 = 5x/7 - 5/2
time 14
14y - 63 = 10x - 35
10x - 14y = -28
5x - 7y = -14