Answer:
A
Step-by-step explanation:
The slope of a vertical line is undefined
The slope of a horizontal line is 0
 
        
             
        
        
        
Answer:
21 to 3
70 to 10
Step-by-step explanation:
28÷7 = 4
21÷7 = 3
70÷7 = 10
 
        
             
        
        
        
Answer:

Step-by-step explanation:
One is given the following equation;

The problem asks one to find the roots of the equation. The roots of a quadratic equation are the (x-coordinate) of the points where the graph of the equation intersects the x-axis. In essence, the zeros of the equation, these values can be found using the quadratic formula. In order to do this, one has to ensure that one side of the equation is solved for (0) and in standard form. This can be done with inverse operations;


This equation is now in standard form. The standard form of a quadratic equation complies with the following format;

The quadratic formula uses the coefficients of the quadratic equation to find the zeros this equation is as follows,

Substitute the coefficients of the given equation in and solve for the roots;

Simplify,

Therefore, the following statement can be made;

 
        
             
        
        
        
Answer:
19
Step-by-step explanation:
I think. I'm not very good at this and I can't type it out. I just hope this is correct.
 
        
                    
             
        
        
        
A is the correct answer. A function is defined where every input, x, has only one output. The coordinates are on the graph are (-4,-1), (-1,4), (1,1), and (4,1). As you can see, there is only one output for every input. X is the domain and y is the range.