^^^^^^^^^^^^^^^^^^^^^↑^^^^^^^ try downloading photo math , its helps you alot!!
 
        
        
        
Answer:
the angle of depression is 45 degrees
Step-by-step explanation:
120(150)
angle theorem
points postulate
90/2=45
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Answer:
I guess you can take x value as 0,1,2,3,4 So that you can get linear function in graph