Answer:
undefined slope
Step-by-step explanation:
There us change in rise but no change in run or x value. This means is a vertical line and it's slope is undefined.
 
        
             
        
        
        
 Answer:
I think your gonna have to do this one on your own because this is a whole experiment. Just saying. :)
Step-by-step explanation:
 
        
             
        
        
        
Ninety-five hundreths is equivalent to 

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The numerator and denominator have a basic factor of 5, so we can divide the numerator and denominator by 5.
 
 
        
        
        
Answer:
y = -1/5 x + 2
Step-by-step explanation:
y = 5x - 4
m = 5
Slope of perpendicular = -1/5
Equation of perpendicular:
y = mx + b
y = -1/5 x + b
Use point (15, -1) for x and y, and solve for b.
-1 = -1/5(15) + b
-1 = -3 + b
b = 2
Equation of perpendicular:
y = -1/5 x + 2
 
        
             
        
        
        
Matrix :
1    4    4
5    2    2
1    5    5
=> Determinant =
1 * (2*5 - 2*5) - 4 * (5*5 - 1*2) + 4 * ( 5*5 - 2*1)
= 1*(10 - 10) - 4*(25 - 2) + 4*(25 -2) = 1*0 + 4* 23 + 4*(25 - 2) = 0 - 4*23 + 4*23 = 0
Answer: 0