If you are writing in slope-intercept form:
You first find the slope.
Put the slope in the equation.
Substitute any point into the equation and find the y-intercept. 
        
             
        
        
        
Answer:
they share some features like; exponents,
mathematical signs, variables, and more
brainliest??
Step-by-step explanation:
Plato!
 
        
             
        
        
        
The vertex form:

The axis of symetry is x = h.

We have

Substitute:

<h3>Answer: x = 3</h3>
 
        
             
        
        
        
Answer:
2. David practices the most hours of soccer.
3. Jessie and Victor.
Step-by-step explanation:
3. On the x-axis, it shows that David practices the most hours out of all the friends.
2. This is just self explanatory!