Hello!
The slope intercept form is y=mx+b, where m is the slope and b is the y-intercept. 
First, let's find the y-intercept. This is where the line hits the y-axis. Therefore, it hits at 4 on the y-axis, so our y-intercept is 4.
To find the slope, let's find 2 points on our line. Let's use (0,4) and (2,5). We divide the difference in the y-values by the difference in the x-values as shown below.

Therefore, our slope is 2.
Now we plug these values into our equation.
y=2x+4
I hope this helps!
 
        
             
        
        
        
The value of  is
 is 
Explanation:
The function  is given by
 is given by

The function  is given by
 is given by

To determine the value of  , let us first substitute the value of
, let us first substitute the value of  .
.
Thus, we get,

Now, substituting for  in the function
 in the function  , we get,
, we get,

Simplifying, the expression, we get,

Multiplying the term within the bracket, we have,

Thus, the value of  is
 is 
Hence, the value of  represents the total amount of money that Barrett earns for working x hours.
 represents the total amount of money that Barrett earns for working x hours.
 
        
             
        
        
        
Easy!!!!! its zero!!!!! LOL