Answer:
y-intercept is at (0,3)
Step-by-step explanation:
 
        
             
        
        
        
<span> -21.8-(-18.3) (2 negative signs become positive)
=</span><span> -21.8 + 18.3
= - 3.5
Answer
- 3.5</span>
        
                    
             
        
        
        
Answer:
99/34 i believe 
Step-by-step explanation:
 
        
             
        
        
        
The coordinate of point B is at (29, -15): Option C is correct.
The formula for calculating the midpoint of two points is expressed as:

Given the coordinate points 
A is (5, 7).
B is (x, y).
M is (17, -4)
Substituting into the formula to get x and y
17 = 5+x/2
5+x = 34
x = 34 - 5
x = 29
Get the value of y. Similarly;
-4 = 7+y/2
-8 = 7+y
y = -8-7
y = -15
Hence the coordinate of point B is at (29, -15)
Learn more here: brainly.com/question/13989426
 
        
             
        
        
        
78! is the answer to this question! trust! -6