What is the point L if the point P(2,-1) is the midpoint of TL and it is given that T is (-3,-7).

The point P(2 , -1) is the mid point of TL where T is (-3,
-7)

The mid-point of two points ( x1, y1) and (x2, y2) is
given by [(x1 + x2)/2 , (y1 + y2)/2]

Let L be (x ,
y)

Here we have 2 = (x - 3)/2 and -1 = (y -
7)/2

=> 4 = x - 3 and -2 = y -
7

=> x = 7 and y =
5

The point L has the coordinates (7,
5)