Answer:

Step-by-step explanation:
Given


Required
Determine AC
Since A, B and C are collinear, then:

So, we have:

Answer:
use your head
Step-by-step explanation:
Answer:
(1, -2)
Step-by-step explanation:
midpoint x = (x₁ + x₂) / 2
midpoint y = (y₁ + y₂) / 2

= (1, -2)
Answer:
x=12
Step-by-step explanation:
-5= x/2.4
multiply both sides by 2.4 to isolate x
-5*2.4= (x/2.4)*2.4
12=x