Step-by-step explanation:
First put it in point slope for y = mx + b
y = -2x + 5
Now plug in what ever number you want for x and solve.
 
        
             
        
        
        
You have to multiply 3 times 2= 6 + 4 = 10 so the answer is 10 I hope this help...
        
             
        
        
        
Answer: {x,y}={-1,2}
step-by-step explanation:
// Solve equation [2] for the variable  x 
 
  [2]    2x = 5y - 12
  [2]    x = 5y/2 - 6
// Plug this in for variable  x  in equation [1]
   [1]    2•(5y/2-6) + 3y = 4
   [1]    8y = 16
// Solve equation [1] for the variable  y 
   [1]    8y = 16 
   [1]    y = 2 
// By now we know this much :
    x = 5y/2-6
    y = 2
// Use the  y  value to solve for  x 
    x = (5/2)(2)-6 = -1 
Solution :
 {x,y} = {-1,2} 
 
        
             
        
        
        
Answer:
200
Step-by-step explanation:
 Divide 400 by 1/2 or 2.