Answer:
-1 1/4
Step-by-step explanation:
 
        
             
        
        
        
The fill up for the 3rd  step is y - 250 =  340x.
- The fill up of the 5th step is  
- The fill up of the 6th step  is  
- The justification for the 2nd step is subtraction PE.
- The justification for the 4th step is division PE.
<h3>What is the 
simplification  about?</h3>
Note that:
y-250 = 250 + 340 x - 250
y = 250 + 340x.
Make x the subject of the formula:
y - 250 =  340x.
then y-250/340 = x
Then  
The justification for the second step is subtraction property of equality because it undergoes subtraction and the collection of like terms and then subtracting them from one another as shown below:
y-250 = 250 + 340 x - 250
y= 250 + 340x - 250 + 250
Note that (-250 + 250) = 0
y = 250 + 340x.
Lastly, The fill up of the 6th step is substitution of the amount of money  saved and  then simplifying it.
Learn more about simplification from
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Answer:
1). y = -7/5x - 4
2). y = 1/5x - 5
Step-by-step explanation:
In this question, we have to write the slope-intercept form of the given information. 
Slope intercept form is: y = mx + b
Our "m" value is our slope and our "b" value is our y-intercept.
With that knowledge, we can plug in our given information to the slope-intercept equation:
1) slope = -7/5, y-intercept = -4
Plug -7/5 to "m" and -4 to "b"
y = -7/5x - 4
2) slope = 1/5, y-intercept = -5
Plug 1/5 to "m" and -5 to "b"
y = 1/5x - 5