Answer: 15 units
Step-by-step explanation:
Given
The endpoints of the line segment are 
The length of the line segment is given by the distance formula i.e.

Insert the values,

Therefore, the length of line segment TU is 15 units
Answer:

Step-by-step explanation:
If
are coordinates of a triangle then area of a triangle is equal to 
Let point P be 
Put 
Area of a triangle = 

Also,
Area of a triangle = 9 square units

±18 = -19 + 5x - 2y

Answer:
x = -5
Step-by-step explanation:
Combine them like terms,then you subtract 4 from both sides,and then Simplify

notice your vertex there, 1, -3
h = 1
k = -3