Answer:
y=-1/3 x +2/3
Step-by-step explanation:
all steps are in picture
 
        
             
        
        
        
Answer:
7
Step-by-step explanation:
2-(-8)+(-3)
2+8-3
10-3
7
 
        
                    
             
        
        
        
Answer:
Its 63.435
Step-by-step explanation:
https://www.calculator.net/triangle-calculator.html?vc=&vx=7&vy=&va=90&vz=14&vb=&angleunits=d&x=104&y=23
I always used this when it came to triangles