Slope intercept form:
y=mx+b
m=slope
b=y-intercept:
We Know the slope (m=2)and we have a point (4,2) then:
x₀=4
y₀=2
we have to find "b"
y=mx+b
2=2(4)+b
8+b=2
b=2-8
b=-6
Therefore:
if b=-6 and m=2; the equation in slope intercept form would be:
y=2x-6
<span>Answer: y=2x-6</span>
        
             
        
        
        
Arrange in ascending order:-
6 7 11 13 14 15 15 19 21
median = 14 
lower quartile  =  mean of 7 and 11 = 9
upper quatile =   mean of 15 and 19 = 17 
Interquartile range = 17 - 9 = 8
answer is 8
        
             
        
        
        
Answer:
i hope you find the answer but unfortunaatly im not sure
Step-by-step explanation: thankyou for the points though :)