Answer:
y=-2x+3
Step-by-step explanation:
y+2x=3
y=3-2x
y=-2x+3
y=mx+b
where m=-2 and b=3.
So the slope for this function is -2 and the y-intercept is 3. You can easily graph this function.
 
        
             
        
        
        
Answer:
If pi is used as pi 113.1
or
If 3.14 is used as pi 113.04
Step-by-step explanation:
A = pi(r)²
 
        
             
        
        
        
Answer:
A relation is a subset of cartesian product of two non empty sets whereas A function is a type of relation in which every element of first set has one and only image in the second set.
In a relation an element of the first set can have many images in the second set whereas in a function the first element can have only one image in the second set.
The given relation is not a function as the element 1 is related to 3 different elements in the second set.
Domain={1}
Range={7,14,21}
 
        
             
        
        
        
Most of the graphing resources used shows that the graph is translated up by 3.25 (3 + 1/4).  If you add the 3 and the 1/4, you get the equation of a line: 
f(x) = x + 3.25,
which means that the graph of f(x)= x now has a y intercept of 3.25. 
The graphs are below. The red line represents f(x) = x, and the green line represents (x+3)+1/4. Hope this helps!
 
        
             
        
        
        
Is the last one please Mark me brainliest :)