The perimeter of the shape is 30 add all the sides
        
             
        
        
        
Substitue y=3x into the other equation to get 3x=-x+4. Solve this to get 4x=4 therefore x=1.
knowing this, y=3
        
             
        
        
        
42m +12
Step-by-step explanation:
6(7m+2)
Distribute
6*7m +6*2
42m +12
        
             
        
        
        
Fssssssssssssssssssssssssssssss dsffffsd xdgs
        
             
        
        
        
Answer:
Step-by-step explanation:
I used logic and took the easy way around this as opposed to the long, drawn-out algebraic way.  I noticed right off that at x = -3 and x = -1 the y values were the same.  In the middle of those two x-values is -2, which is the vertex of the parabola with coordinates (-2, 4).  That's the h and k in the formula I'm going to use.  Then I picked a point from the table to use as my x and y in the formula I'm going to use.  I chose (0, 3) because it's easy.  The formula for a quadratic is

and I have everything I need to solve for a.  Filling in my h, k, x, and y:
 and
  and
 and
  and
-1 = 4a so

In work/vertex form the equation for the quadratic is

In standard form it's:
