Answer:
AB is perpendicular to [GH] and GH is [A]
Step-by-step explanation:
Use gradient formula, rise over run.
y2-y1/x2-x1
<h3>
Answer:</h3>

<h3>
Explanation:</h3>
Change
so that is has a common denominator. 
Make an equation. 
Add. 
Add. 
Divide both sides by 2. 
Convert to a mixed number. 
As determined by the graph, f(-9) = 9
Answer:360
Step-by-step explanation: