Answer:
y = -  x -
 x - 
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = 
with (x₁, y₁ ) = (- 4, 2 ) and (x₂, y₂ ) = (3, - 4) ← 2 points on the line
m =  = -
 = -  , thus
 , thus
y = -  x + c ← is the partial equation
 x + c ← is the partial equation
To find c substitute either of the 2 points into the partial equation
Using (- 4, 2 ), then
2 =  + c ⇒ c = 2 -
 + c ⇒ c = 2 -  = -
 = - 
y = -  x -
 x -  ← equation of line
 ← equation of line
 
        
             
        
        
        
In solving this problem we can consider Earth to be a sphere. When we have a circle, then we can use this formula to find arc length:

Where:
L= arc length (in this problem it is disance we need to travel)
R = radius of circle (in this problem it is equal to a radius of Earth)
C = angle we need to pass
We are told that two cities lie halfway around the world. If we fly to west this means angle is 180°.
This gives an arc length of:

If we want to fly to north we need to go to 90° northern latidtude and then back to 17° latitude. This means angle is:
C=2*(90-17)=2*73°=146°
This gives an arc length of:

We can see that flying north is shorter. It is shorter by:
12440.71 miles - 10090.8 miles = 2349.91 miles
 
        
        
        
Answer:
Olga's mistake: She did not multiply  and
 and  in the beginning
 in the beginning
Step-by-step explanation:
The main problem is that when a number is outside of the parentheses on the left side, then you have to multiply that number, in this case  , by both numbers in the parentheses. After that, continue solving the problem as you usually would. Hope this helped!
, by both numbers in the parentheses. After that, continue solving the problem as you usually would. Hope this helped!
 
        
                    
             
        
        
        
Line Segment,....................