Answer:
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Step-by-step explanation:
Since we have two points we can use the slope formula
m = (y2-y1)/(x2-x1)
    = (-2--6)/(4-4)
    = (-2+6) / 0
We cannot divide by 0 so the slope is undefined
 
        
             
        
        
        
Answer:SAS
Explanation:In triangle ABC:
a would be the side opposite to angle A
c would be the side opposite to angle C
Combining the given, we would fine that we have the measures of two of the sides and the measure of the angle included between them.
This means that we have SAS information.
Check the attached image for visual illustration.
Hope this helps :)
 
        
                    
             
        
        
        
Given is - 
The variables y and x have a proportional relationship, and y = 5 when x = 4.

As we have to find the value of x when y= 8 so putting y = 8 in the above relationship, we get :



Hence, the answer is 6.4