For this case we have that by definition, the slope of a line is given by:

Where:
 and
 and  are two points through which the line passes.
 are two points through which the line passes.
Question 1:
According to the image, we have the following points:

Substituting we have:

Thus, the slope is: 
Question 2:
According to the image, the line goes through the following points:

Substituting we have:

Thus, the slope is: 
Answer:
Slope 1: 
Slope 2:
 
        
             
        
        
        
Answer:
3 +  is irrational, as
 is irrational, as  is an irrational number in itself, not being able to change into a fraction as it is a non-terminated number.
 is an irrational number in itself, not being able to change into a fraction as it is a non-terminated number. 
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Answer:
y = - 2x + 7
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 ) = (8, - 9) and (x₂, y₂ ) = (- 4, 15)
m =  =
 =  = - 2, thus
 = - 2, thus
y = - 2x + c ← is the partial equation
To find c substitute either of the 2 points into the partial equation
Using (8, - 9), then
- 9 = - 16 + c ⇒ c = - 9 + 16 = 7
y = - 2x + 7 ← equation of line
 
        
             
        
        
        
Answer:
Step-by-step explanation:
We can calculate probability by looking at the outcomes of an experiment or by reasoning about the possible outcomes.