Answer:
The first option is not a direct variation 
Step-by-step explanation:
When we talk of a direct variation, as one value increases, the other value increases too
Or as one value decreases, the other value decreases
A direct variation is of the form;
y = kx 
k = y/x
where k is the coefficient of variation that must be a constant value all through the set of values 
The values we are comparing here are the x and y values 
So
let us take a look at the options;
The first option is not a direct variation 
For the first option, the rate of increase is not constant;
2/6 = 1/3 , 8/12 = 2/3 , 14/18 = 7/9
for the second;
the ratio is 1 to 1
for the third;
3/6 = 1/2 ; 6/12 = 1/2; 9/18 = 1/2
for the fourth;
2/6 = 1/3, 4/12 = 1/3 , 6/18 = 1/3
 
        
             
        
        
        
Look at it this way:
When you flip a coin, the probability of it landing with EITHER side showing 
is 100%.  
This leads us to the rule ... 
               The sum of the probabilities of 
               all possible outcomes is 100%.
For a coin:  (probability of heads) plus (probability of tails) = 100%.
That just says:  We're 100% sure that the coin will land with either 
heads or tails up.
An "honest" coin gets heads 50% of the time and tails the other 50%.
But if the coin is all bent and squashed and has a feather stuck to 
one side and a wad of gum on the other side so that it comes up 
heads 70% of the time, then the coin isn't 'honest'.  But it still has to
land EITHER heads OR tails, so the sum of the probabilities is still 100%.
So the probability of heads is 30%. 
        
             
        
        
        
Answer:
The median and IQR
Step-by-step explanation:
 
        
             
        
        
        
Answer:
   29°, 58°, and 93°
Step-by-step explanation:
If the angles opposite are equal, the sides are equal. In order to have three different side lengths, you must have <em>three different angles</em>.