Cut five inches to creat the least amount of unused cardboard.
        
             
        
        
        
Before dilation:
the height of the triangle is h₁ = 7 - (-1) = 8
the width of the triangle is w₁ = 7 - (-5) = 12
After dilation:
the height of the is h₂ = 9-7 = 2
the width of the triangle is w₂ = -5 - (-8) = 3
The scale factor is h₂/h₁ = 2/8 = 1/4 = 0.25
Also, the scale factor is w₂/w₁ = 3/12 = 1/4 = 0.25
Answer: The scale factor is 0.25
 
        
        
        
2/3 , 3/4 7/12 there you go
        
                    
             
        
        
        
1 and 4 will be the expression that makes the equatio. true for all values of x to prove i have done it in the picture attached in this message