Answer:
(3,0.5)
Step-by-step explanation:
The given system has equations:

Let us multiply the second equation by 4 and the first equation by 10.

We add both new equations to get:

Put x=3 into the first equation and solve for y.

The point of intersection is the solution to the system of equation which is (3,0.5)
 
        
             
        
        
        
Answer:
x = -2
Step-by-step explanation:
-4x + 3y = 23
y = -7x - 9  //  *-3
-4x + 3y = 23
-3y = 21x -27
+++++++++++++++++++
-4x = 21x + 50
-50 = 25x
x = -2
 
        
             
        
        
        
Answer:
a. 
Step-by-step explanation:
 
        
             
        
        
        
Answer: 4.2 
Step-by-step explanation:
it is better for the mean deviation to be smaller because then the data in the set is not skewed and is more consistent. :)
 
        
                    
             
        
        
        
Answer:
f(1) = 1
Step-by-step explanation:
To evaluate a function, you see the y value it gives when you plug in the x value.
When you plug in 1 for the x value, the y value is also 1, so f(1) = 1