Answer:

Step-by-step explanation:
Standard equation of a line is y = mx + b, where m is the slope.
Given line y = - 3x + 78, slope, m₁ = -3
<em><u>To find the line perpendicular to the given line.</u></em>
The lines are perpendicular to each other if the product of their slopes = - 1
That is, 
          
So the slope of new line is 
                                                    

 
        
             
        
        
        
Sent a picture of the solution to the problem (s).
 
        
        
        
Answer:
20
Step-by-step explanation:
 
because 4 can go into 20 5 times without a remainder
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
1)=-2
2)=18
3)=2.5