Answer:
4
Step-by-step explanation:
The number on the right  squared in equal to the number on the left
5^2 =25
6^2 = 36
What squared = 16
4^2 = 16
The the missing number is 4
 
        
             
        
        
        
Answer:
The fourth option with x values of -3,-2,4 and 7 is a function of x.
Step-by-step explanation:
This is due to it having only one of each x value.
On the other tables, they have multiple values for an x value. This means that it is not a function
 
        
                    
             
        
        
        
Answer:
the answer would be done like this 
Step-by-step explanation:
 you have to get y by itself so you would need to move the x to the right of the equal sign
once you move anything to the opposite side it switches, so positive becomes negative vice versa 
-3y=-x+18 
you need to make sure you have positive 1 y so you would divide y by -3 to make it 1 
everything else is multiplied by -3 as well
so the answer would be y=⅓x-6
 
        
                    
             
        
        
        
Answer:
2x^2+4x-16
Step-by-step explanation:
The quadratic can be written as
f(x) = a(x-z1)(x-z2) where z1 and z2 are the roots
f(x) = a (x-2)(x- -4)
a is the leading coefficient
f(x) = 2(x-2)(x+4)
      = 2(x^2 -2x+4x-8)
      = 2(x^2 +2x-8)
      = 2x^2 +4x-16
 
        
             
        
        
        
Answer:
31*
Step-by-step explanation:
right triangle means 90* so 90*-59* = 31*