1. <span>Simplify -9 + -2m to -9 - 2m
-3m = -9 - 2m
2. </span><span>Add </span>2m <span>to both sides
-3m + 2m = -9
3. </span><span>Simplify -3m + 2m to -m
-m = -9
4. </span><span>Multiply both sides by </span><span><span>−<span>1
m = 9
Done! :) our answer is m = 9</span></span></span>
        
             
        
        
        
Answer:
 (a) The data set is a function, since for each input value {3,4,6,11} there is a single output value {5,7,11,21}
 (B) A function is a mathematical relationship that associates one or more inputs with a single output value. So that the data set is not a function, there should be - for one or more values of the input - more than one output.
 for example, if for the input value {3} there were two outputs {5, -5} then, the data set would not be a function.
 The frelation  is not a function because:
 is not a function because:
 When x = 1, y = +1 and y = -1.
 (c) The set of data provided can be represented by the equation of a line of the form y = mx + b
 The slope is:
 
 
 m = 2
 
 b = 5 - 2*3
 b = -1
 Then, the function is:
 y = 2x-1
 You can substitute any of the points shown in the equation and check that equality is satisfied, for example:
 (11 , 21)
 y = 2 (11) -1
 y = 22-1
 y = 21. The equation is satisfied. The same goes for the rest of the values.
 
        
             
        
        
        
Answer:
3 <_ x
Step-by-step explanation:
multiply both sides by 15
1/5 * 15 <_ x
15/5 <_ x
3 <_ x
 
        
             
        
        
        
the greatest common factor of 32 and 90 is 2
 
        
             
        
        
        
The correct answer would be A- as it shows the correct median of 25.5