Let the given points be:
d = √ [ (x2−x1)2+(y2−y1)2(x_2 - x_1)^2 + (y_2 - y_1)^2(x2−x1)2+(y2−y1)2]
PQ = √ [ (t−(−3))2+(−5+14)2(t - (-3))^2 + (-5 + 14)^2(t−(−3))2+(−5+14)2]
⇒\Rightarrow⇒ √ [ (t+3)2+81(t + 3)^2 + 81(t+3)2+81] = 9
Squaring on both sides,