Answer:
It would be B
Step-by-step explanation:
You can check each question by subsituting the x and y with points on the graph.
Example: (1,3)
y = 3x
3 = 1 x 3
3 = 3
 
        
                    
             
        
        
        
Answer:

Step-by-step explanation:
First of all, let's rewrite the first one after dividing both sides by 2.

Now, let's pick one you want to eliminate.
<u>Eliminating x:</u> Let's multiply the first one by 4, the second by 3, and subtract one from the other. Rest is simply solving an equation in one variable

<u>Eliminating y:</u> Let's multiply the first by 5, the second by 2, and add them together. Rest is simply solving an equation in one variable

 
        
             
        
        
        
For this case, the first thing we must do is define variables:
 x: first number
 y: second number
 We now write the system of equations:
 x + y = 20
 y = 2x + 35
 Solving the system we have:
 x = -5
 y = 25
 Answer:
 The numbers are:
 x = -5
 y = 25
        
             
        
        
        
Answer:
About 141 students would attend. 
Step-by-step explanation:
423/3=141
 
        
             
        
        
        
Answer:
Option C is correct.
Step-by-step explanation:
Number of students of Deerlake middle school that voted = 442
Percentage of student that voted = 76%
Let x be the total number of student.
According to the Question,



Therefore, Option C is correct.