If it's already a negative number it's going to stay as a negative number
Answer: 
Step-by-step explanation:
Point-slope formula: 
Plug in the numbers: 
Clear the double negatives: 
Answer:
10
Step-by-step explanation:
Answer:
d. (10,800)
Step-by-step explanation:
Vertex appears to be at x = 10
Vertex: (10,800)